Hyundai sonata will not start

Have a Hyundai Tucson 2008. Fuel pump was leaking, replaced seals, refitted the pump. Car swings, just does not want to start. Any ideas Regards Shaun . ... Sonata/i45 MD (2011-2016) Elantra sedan/coupe NF (2006-2010) Sonata CM (2007-2012) Santa Fe MC (2006-2011) Accent.

Hyundai sonata will not start. 1. Weak Battery. If your Sonata’s engine won’t crank or cranks very slowly, then the most likely culprit is weak or dead 12v battery. Investigating more closely and doing a battery voltage test will clarify whether the starting problem is due to the battery. A test can be done to measure the voltage between the battery poles, check the acid ...

My 2013 Hyundai Sonata will not start. There is a brand new battery in it so that can be ruled out. When you push the start button it starts to turn over a...

My 2018 Hyundai Sonata has had a new engine put in 2020, when the temps go below 30° my car will not start. The battery, starter, and everything has been tested. I never had problem until the defect in my engine and they put a new one in. I was in contact with a lady named Melany but no current help. She has not returned my messages.2023 SONATA Hybrid Blue: 50 City/54 Hwy/52 Combined. 2023 SONATA Hybrid SEL/Limited: 45 City/51 Hwy/47 Combined. All figures are EPA estimates and for comparison purposes only. Actual mileage will vary with options, driving conditions and habits, vehicle and battery's condition and other factors. 192-hp gas/electric combined⁠. Panoramic sunroof.I had my 2018 Sonata towed to the dealer as it would not start for the AAA tech either. They sold me a new battery. When I went the next day to pick up the car it would not start as it was a cold cloudy day. They just called me and said it was a loose nut and it’s all set. I am afraid I will get stuck somewhereHelp! 2011 Hyundai Sonata will not start! Jump to Latest Follow ... Hey guys, so I'm the second owner of a 2011 Hyundai Sonata SE 2.4L with about 79,000 miles on it. I've had it for about 6 months and I go to get …The 2006 Hyundai Sonata has 3 problems reported for car won't start. Average failure mileage is 92,000 miles.I have had issues with the radio in my '13 SE turbo where it does not connect to Bluetooth. Your condition however seems to be either one of a grounding issue or one of a "broken" power/ground. The suggestion would all depend on how much you're willing to part with. I would look into a new head unit, Pioneer or the like.1. Weak battery. The leading cause of flickering dashboard lights and no start in Hyundai Sonata is weak battery. You may also hear rapid clicking noise when you try to start the engine. If there isn’t enough charge in the battery to power the starter motor, and you try to crank the engine, the battery voltage will get so low that it can’t ...

May 1, 2024 · If your Hyundai Sonata ‘s lights turn on but it still won’t start, the issue is likely not related to the battery. It’s highly possible there is a problem with the starter motor. Investigate if you hear any clicking noises when trying to turn the key. If so, the starter motor is trying to engage but failing.Turn the Ignition to ACC: Insert the key into the ignition and turn it to the “ACC” (Accessory) position. This is typically one click before the “ON” position. Press the Key Fob Button: Locate the “Unlock” or “Open” button on your key fob. Hold this button down for several seconds. Wait for Confirmation: A light should start ...A bad alternator can cause your battery to drain to the point it can't turn your Sonata over. Suspect the alternator if the battery light stays on after charging your car's battery or jumping it. 3. Starter Motor. The next thing to look at when your Sonata isn't starting would be the starter itself.Sep 17, 2023 · Preventing Cold Weather Start-Up Issues In Your Sonata. To ensure your 2018 hyundai sonata starts in cold weather, make sure to maintain the battery, fuel system and ignition. For the battery, regularly check and clean connections, and test the voltage. In the fuel system, keep the tank at least half full and use a fuel additive to prevent ...Same here, not starting in cold weather. I've been having the same problem as everyone else. 2018 Sonata Limited. When the weather gets under 30°F, I have to hold down the start button to get it to start. Last Thursday the temperature was under 20°F, and it wouldn't start at all. I had it towed to the dealership.The Hyundai Sonata has long been revered as a top choice in the midsize sedan segment. With its sleek and sophisticated design, this vehicle stands out from the crowd. From its bol...

The engine will not start in Park, but it can start in Neutral. A number of these Hyundai transmission problems are explained in-depth below. ... This well-known problem affects a series of cars and SUVs sold in the U.S, such as Hyundai Sonata, Veloster, i30, Tucson, Ioniq, and Venue.Hyundai recommends changing the timing belt every 90,000 miles in the 2015 Hyundai Sonata. Most manufacturers suggest somewhere between 60,000 to 100,000. Signs suggesting you need a new timing belt include hearing a ticking noise from the engine, the car won’t start, or you notice an oil leak under the motor.Jul 17, 2023 · Others. There are a variety of reasons why a car, such as a Hyundai Sonata, might fail to start despite having a good battery. One possible cause could be an issue with the starting system, such as a faulty starter or ignition switch. Another potential problem could be a clogged fuel filter or a fuel pump that has stopped working.The 2023 SONATA embraces the aggressive curves and sharp lines of a 4-door coupe while delivering a sleek and modern cabin designed around your every need. Surround yourself with advanced technology, like the available 12.3" full digital instrument cluster and a suite of standard and available Hyundai SmartSense safety features.does not start early morning. Asked by ishaque1959 Apr 10, 2020 at 02:45 AM about the 2002 Hyundai Sonata. Question type: Maintenance & Repair. car surges and does not start early morning but when outside temperature is. above +30 deg centigrade it starts i am residing in nashik maharashtra.Used Hyundai Sonata by Year. Save up to $2,917 on one of 12,735 used Hyundai Sonatas near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.

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2012 Hyundai Sonata cranks no start. So after fixing others issues recently re: no start..specifically not even cranking over (replaced starter, push button ignition, brake switch)- that issue resolved. Now sometimes it might happen once in a week or a few time in a single day... car would occasionally just crank and not start.1. Battery Cables. If you have a battery post that looks like this, it may be keeping your Sonata from starting. Start by taking a look at the battery posts. If they are …Inside, the 2024 Hyundai Sonata gets a whole lot of changes. New dual 12.3-inch screens make their way into the cabin, taking a page from other newer …42dot is in merger talks with Hyundai Motor, but terms, including stake size and deal valuation, hadn't materialized yet. Hyundai Motor is considering increasing its stake in, or f...10. Sonata2010FuelPump answered 6 years ago. Had this problem on our 2010 Sonata and it was intermittent and seemed to only occur on hot or warm days. The car just wouldn't start, it would crank and all the lights and power worked, so it wasn't the battery but it refused to kick in and run. thought we flooded it the first time cause a few hours ...If your Hyundai Sonata Hybrid doesn't start, the 12V battery might be dead. This can happen if the car hasn't been used for some time or if the battery is old. Signs of a dead battery include the engine not starting and dim or flickering dashboard lights. To troubleshoot, first try jump-starting your car with another vehicle.

Your Hyundai Sonata may not have the remote start feature. Get your vehicle checked by an authorized Hyundai dealer to confirm if it is equipped with a remote start system. Automatic engine shutdown after remote start. For safety and security reasons, ...2008 Sonata Won't Start. I'm posting this issue only so that it shows up in Google searches, in hopes that this information might help other Sonata owners with an issue that caused me a lot of grief. My 2008 Hyundai Sonata wouldn't start on two separate occasions after I had refilled my tank. The first incident happened a little over a month ...Usually if the hybrid battery is below 15% the dealer must do a manual recharge. Do you know why it got so low? Parked a long time or something perhaps? The hybrid battery is over 200 volts so it requires a specialized charger. This is an older thread, you may not receive a response, and could be reviving an old thread.Usually if the hybrid battery is below 15% the dealer must do a manual recharge. Do you know why it got so low? Parked a long time or something perhaps? The hybrid battery is over 200 volts so it requires a specialized charger. This is an older thread, you may not receive a response, and could be reviving an old thread.Hyundai said it plans to invest more than $10 billion toward accelerating electrification and autonomous vehicle technology in the U.S. by 2025. Part of that pot includes the $5.5 ...Hi Folks, was hoping someone might be able to help me diagnose an intermittent no-start issue I am having with a 2013 Hyundai Sonata 2.0T SE with push start ignition, which is relevant here: ... 2011 Sonata GLS Miles on her = 192,655 2006 Sonata GLS 3.3L with 205,600 .Common Reasons for a Hyundai Sonata Not Starting The Hyundai Sonata is one of the most popular mid-size sedans available today. It boasts a sleek exterior, spacious interior, and impressive fuel economy. However, like every other car, the Sonata is not immune to maintenance issues that can interfere with its performance, particularly starting issues. In […]The common issues with Hyundai’s push button start system, as reported by various sources, include: Brake Pedal Sensor Failure: A prevalent issue is the failure …Asked by ray62661 Oct 01, 2016 at 02:45 PM about the 2011 Hyundai Sonata 2.0T SE FWD. Question type: Maintenance & Repair. Recently had to change fuel pump. because car died and had to be towed. Battery went dead because of constantly. trying to restart it after it originally died, fuel. pump replaced, battery jumped off to start.1. Battery Capacity Diminished. Far and away the number one reason that your Sonata won’t start in the cold is the battery. A battery has two different ratings, …The Sonata Gallery is your handy guide to the Sonata Effects - the set bonuses of Wuthering Waves. Here you'll find a list of all nine Sonata Effects alongside a description of the bonuses they ...

1. Weak battery. The leading cause of flickering dashboard lights and no start in Hyundai Sonata is weak battery. You may also hear rapid clicking noise when you try to start the engine. If there isn’t enough charge in the battery to power the starter motor, and you try to crank the engine, the battery voltage will get so low that it can’t ...

have 2006 sonata 3.3 car cranks but wont start. installed new battery but still wont start. plz point to what the issue is. currently stuck at an airport … read more. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts.Sonata ( / səˈnɑːtə /; Italian: [soˈnaːta], pl. sonate; from Latin and Italian: sonare [archaic Italian; replaced in the modern language by suonare ], "to sound"), in music, literally means a piece played as opposed to a cantata (Latin and Italian cantare, "to sing"), a piece sung. [1] : 17 The term evolved through the history of music ...May 29, 2022 · 1. Weak battery. The leading cause of clicking noise and no start in Hyundai Sonata is weak battery. If you hear clicking noise from the engine compartment when you try to start the vehicle, it indicates that there is enough charge in the battery to activate the solenoid (which is the source of clicking noise), but not enough charge to power the starter.The Hyundai Smart Key is featured on many of the newer models that we have on-site here at Van Hyundai. It's a pretty simple concept, but it provides you with excellent convenience. When you're away from your Hyundai, you'll be able to lock your doors remotely, unlock them, start your vehicle up ahead of your arrival, and there is even a panic button that can save you in an emergency.Had an issue with a no Start. Fixed it with a trick that I came across with the shifter. This issue is very common with alot of Hyundai models with the push ...8 posts · Joined 2021. Add to quote. Only show this user. #1 · Jan 18, 2021 (Edited) I have a 2015 Sonata and a few weeks ago, push button ignition stopped working. The dash said "Key not detected" followed by "Press START button with key". It did start when I pushed the Start button with the key. Here are some other tests and observations:The most common reasons a Hyundai Sonata won't start are a dead battery, an alternator problem, or failed starter. 0 % 38 % of the time it's the. Battery. 0 % 27 % of the time it's …This would indicate the fuel pump relay was. supplying power to the level sensor, which in turn implies the fuel pump is also. getting power. Try this: As you drive the vehicle from time to time take note of the fuel level when you. turn off the engine. Each time you start the engine, take note of whether or not the fuel.The Hyundai Elantra has been around since 1991, but wasn't made available in North America or Europe until 1993. Featuring different four-cylinder engines throughout its generation...

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have 2006 sonata 3.3 car cranks but wont start. installed new battery but still wont start. plz point to what the issue is. currently stuck at an airport … read more. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts.If your Hyundai Sonata ‘s lights turn on but it still won’t start, the issue is likely not related to the battery. It’s highly possible there is a problem with the starter motor. Investigate if you hear any clicking noises when trying to turn the key. If so, the starter motor is trying to engage but failing.Plus: Elon Musk’s extremely busy week Good morning, Quartz readers! US state attorneys called for a recall of Kia and Hyundai cars. The vehicles are apparently too easy to steal. L...Service Procedure: 1. Turn the ignition key to the ON position or push the Start/Stop Button two times. 2. Using the factory or enhanced scan tool, check for the DTCs listed above. Record the DTCs and description, then delete the DTCs. 3. Select the live data parameter for the “Shift Lever Switch.”.I had my 2018 Sonata towed to the dealer as it would not start for the AAA tech either. They sold me a new battery. When I went the next day to pick up the car it would not start as it was a cold cloudy day. They just called me and said it was a loose nut and it’s all set. I am afraid I will get stuck somewhereThree-part structure. The basic elements of sonata form are three: exposition, development, and recapitulation, in which the musical subject matter is stated, explored or expanded, and restated. There may also be an introduction, usually in slow tempo, and a coda, or tailpiece. These optional sections do not affect the basic structure, however.Your Hyundai Sonata may not have the remote start feature. Get your vehicle checked by an authorized Hyundai dealer to confirm if it is equipped with a remote start system. Automatic engine shutdown after remote start. For safety and security reasons, ...Usually if the hybrid battery is below 15% the dealer must do a manual recharge. Do you know why it got so low? Parked a long time or something perhaps? The hybrid battery is over 200 volts so it requires a specialized charger. This is an older thread, you may not receive a response, and could be reviving an old thread.The most common reasons a Hyundai Sonata won't start are a dead battery, an alternator problem, or failed starter. 0 % 38 % of the time it's the. Battery. 0 % 27 % of the time it's …Mar 5, 2013 · Here is a possible solution: I’ve had my 2011 Hyundai Sonata for 2 years and not many issues with the vehicle however, every now and then at completely random times my car will not start. Everything turns on the lights work, AC blows, Radio is working but the vehicle will not crank. I tested the battery, the starter, and the fuses.In summary, a Hyundai Sonata not starting can be caused by a weak or dead battery, clogged fuel system, faulty ignition switch, and inadequate maintenance. These problems can be avoided through regular maintenance, which will help identify issues before they escalate and keep your vehicle in good working condition. ….

Check the oil level: Start by checking the oil level using the dipstick. Ensure that the vehicle is parked on a level surface and the engine is cool before doing so. Inspect for leaks: Look for any signs of oil leakage under your car or in the engine compartment. Leaks can lead to a drop in oil levels over time.2016 Hyundai Sonata sport. I’m troubleshooting a no start. It doesn’t crank. All the lights on the dash turn on and does a system check with no errors. As soon as you press the ignition button it doesn’t turn on and the dash lights turn off. All fuses and relays are good and there’s no DTCs stored, battery tests good too.RESOLUTION: It turns out the issue with my 2011 Sonata was with the Transmission Range Sensor, the telltale of which was that the Transmission status indicator in the dashboard would be blanked out when the card was in the bad mode. 2011 Hyundai Sonata with Push Button start. Died at a gas station 4 months ago, replacing the Key Fob battery worked.Jun 25, 2018 · Notice the strange pattern of the alarm sound. When this happens, the alarm cannot be stopped by turning the key, pressing the button on the key fob, or inserting the key in the door. However, if I lock the car, walk away for an hour or two and come back, the car usually will start up just fine. Other times, if I put the charger on the battery ...Aug 22, 2023 · 1: Failing Fuel Pump. The engine can have some starting issues if your Hyundai Sonata’s fuel pumps malfunctions. In most cases, the pump ensures that the engine’s injection system receives the correct fuel under enough pressure from the tank. If your car’s engine frequently fails, is challenging to start, jerks slightly, or performs ...2013 Sonata Hybrid "hybrid battery low, do not start engine" ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing. Explore Our Forums. YF (2011-2014) Sonata/i45 MD (2011-2016) Elantra sedan/coupe NF (2006-2010) Sonata CM (2007-2012) Santa Fe MC (2006-2011) Accent.I have a 2012 hyundai sonata 2.0 4 liter turbo with a push button starting system. Yesterday i had to try a couple times to start it checked the oil was just under the Low line i filled the oil up to … read moreSonata (/ s ə ˈ n ɑː t ə /; Italian: , pl. sonate; from Latin and Italian: sonare [archaic Italian; replaced in the modern language by suonare], "to sound"), in music, literally means a piece played as opposed to a cantata (Latin and Italian cantare, "to sing"), a piece sung.: 17 The term evolved through the history of music, designating a variety of forms until the Classical era, when it ... Hyundai sonata will not start, Less than a year after I bought Hyundai Sonata Hybrid 2016, I suddenly could not start my car; there was a Check Hybrid HEV warning sign on dashboard. I had to wait for for 30-60 minutes before I ..., The most common reasons a 2019 Hyundai Sonata won't start are a dead battery, an alternator problem, or failed starter. 0 %. 38 % of the time it's the. Battery. 0 %. 27 % of the time it's the. Alternator. 0 %. 20 % of the time it's the., 1. Weak battery. The leading cause of clicking noise and no start in Hyundai Sonata is weak battery. If you hear clicking noise from the engine compartment when you try to start the vehicle, it indicates that there is enough charge in the battery to activate the solenoid (which is the source of clicking noise), but not enough charge to power the starter., Hyundai Sonata: Won’t Start Cold – Causes. 1. Battery Capacity Diminished. Far and away the number one reason that your Sonata won’t start in the cold is the battery. A battery has two different ratings, cranking amps and cold cranking amps. Cold cranking amps are the batteries ability to start turn the engine over when it is cold., The Hyundai Elantra has been around since 1991, but wasn't made available in North America or Europe until 1993. Featuring different four-cylinder engines throughout its generation..., Aug 20, 2023 · Sonata is for short-term use only. Do not take this medicine for longer than 5 weeks without your doctor's advice. Call your doctor if your symptoms do not improve after 7 to 10 days of treatment, or if they get worse. Do not stop using Sonata suddenly after taking it over several days in a row, or you could have unpleasant withdrawal symptoms., immobilizer is a common problem with some new gen ,specially this car ,security light stay on and you are not bale to start the car ., I've got a 2009 with the same symptoms - hard start after filling up with gas and running poorly for a couple minutes after. I'm currently getting codes P0456 - "Evaporative Emission System Leak detected (very small leak)" and P0496 "Evaporative Emission System High Purge Flow." 2009 Accent GLS - Daily., People online say that there are issues with a bad brake pedal switch (Stop Lamp Switch ) that can cause issues starting the car. There is a way to start the car by pressing the starter button 1 time and going into accessory mode. Then you press the start button for 10 seconds and the car should start., 1. Battery Capacity Diminished. Far and away the number one reason that your Sonata won’t start in the cold is the battery. A battery has two different ratings, …, There are a few reasons why your Hyundai Sonata may not be starting, such as a bad starter, a bad battery, bad alternator, and more. Hyundai Sonata Hesitates to Start: Causes. Here are some of the most typical reasons your Sonata’s starter is not cranking as fast as it should be. 1. Bad Battery., Oct 25, 2023 · General Discussion. jayre October 25, 2023, 4:15pm 1. 2018 Sonata SEL 42K miles. Lately it doesn’t always start even 'tho everything else comes on when I press on the start button. If I try a bit later, it starts fine. Do I need a new battery or is it the keyfob?, 7.9. out of 10. edmunds TESTED. The Hyundai Sonata looks sharp and comes with plenty of features. It doesn't have the sharpest driving experience in its class, but abundant space and exceptional ..., 1: Failing Fuel Pump. The engine can have some starting issues if your Hyundai Sonata's fuel pumps malfunctions. In most cases, the pump ensures that the engine's injection system receives the correct fuel under enough pressure from the tank. If your car's engine frequently fails, is challenging to start, jerks slightly, or performs ..., May 30, 2019 · P0A0F -- Engine failed to start. P1C76 -- HSG not calibrated. P0C17 -- Drive Motor "A" Position Sensor - Drive Motor Calibration. You best served to relieve "mechanic" of product he don't know what to do with,, or tools to get into the software of the car,, and drop it at local Hyundai dealer and let a trained Hyundai Tech have at it,, phone ..., Reasons a 2019 Hyundai Sonata Won't Start. 2019 Hyundai Sonata. The most common reasons a 2019 Hyundai Sonata won't start are a dead battery, an alternator problem, or failed starter. 0 %. 38 % of the time it's the. Battery. 0 %. 27 % …, Hyundai Smart Key Fob Not Detected. There could be several reasons why a Hyundai key fob is not being detected by your car. Something as simple as a dead battery in your smart key might be the problem. After you replace the battery, you'll be able to determine if that was the issue. Replacing your battery involves a few easy steps., If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor /distributor pick ..., If you own a 2011 hyundai sonata, there are few problems that you need to be aware of. Firstly, you may experience a clicking noise when starting the car. Additionally, ignition failure can happen, which means that there is no response when you turn the key. Your engine might turn over, but it won't start. And, starter continuous running ..., Reasons a Hyundai Sonata Won't Start. Hyundai Sonata. The most common reasons a Hyundai Sonata won't start are a dead battery, an alternator problem, or failed starter. 0 %. 38 % of the time it's the. Battery. 0 %. 27 % of the time it's the. Alternator., My 2018 Hyundai Sonata has had a new engine put in 2020, when the temps go below 30° my car will not start. The battery, starter, and everything has been tested. I never had problem until the defect in my engine and they put a new one in. I was in contact with a lady named Melany but no current help. She has not returned my messages., My 2018 Hyundai Sonata has had a new engine put in 2020, when the temps go below 30° my car will not start. The battery, starter, and everything has been tested. I never had problem until the defect in my engine and they put a new one in. I was in contact with a lady named Melany but no current help. She has not returned my messages., Reconnect the battery terminals: Reconnect the positive cable first, then the negative cable. Tighten the 10mm nuts to ensure a snug and secure connection. Close the hood and start the engine: With everything in place, close the hood and start your Hyundai Sonata., Common Reasons for a Hyundai Sonata Not Starting The Hyundai Sonata is one of the most popular mid-size sedans available today. It boasts a sleek exterior, spacious interior, and impressive fuel economy. However, like every other car, the Sonata is not immune to maintenance issues that can interfere with its performance, particularly starting issues. In […], SONATA N Line is equipped with a 290-hp 2.5L turbocharged engine, 19-inch N Design alloy wheels, and N exterior and interior accents. SONATA Limited Hybrid treats you with high-end features like leather seating surfaces, Remote Smart Parking Assist and Bose premium audio with 12 speakers. 2024 SONATA. Gas., have 2006 sonata 3.3 car cranks but wont start. installed new battery but still wont start. plz point to what the issue is. currently stuck at an airport … read more. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts., My 2011 Hyundai Sonata will not start. This is the 4th time this has happened. It has been towed to the dealer three times and is currently in the grocery store parking lot and will not start. The first time the dealer replaced the ignition switch. The next two times the dealer could not find the problem and the car started for them throughout ..., Hyundai said it plans to invest more than $10 billion toward accelerating electrification and autonomous vehicle technology in the U.S. by 2025. Part of that pot includes the $5.5 ..., The most common reasons as to why this happens are: ⚠️ Low battery of the key or the remote control: the chip will not send the signal. ⚠️ The chip of the key is damaged or has been decoded: it may happen if the key is damaged or if it gets wet. ⚠️ Faulty electrical wiring: it may happen both in the antenna as well as in the ..., My 2006 Sonata LX has been having this issue lately. Car will not start or crank. Power seems to be working, lights, radio, heater all work. When the key i..., March 26, 2021. Tom Harbid. If your Hyundai Sonata won't start, the problem is related to the battery, the battery terminals, the key fob battery, the starter, the alternator, the fuel filter, the fuse, the spark plug, or the engine., The fix for this is installing an E clip on the end of the shifter pin. From the looks of it, it seems as though the E clip was supposed to be there in the first place but was overlooked during assembly. That resulted in over 800,000 Sonatas being recalled. The recall service bulletin number is “14-01-033”., 3 posts · Joined 2006. #7 · Jan 19, 2008. Hi, I'm no expert, but, check the crankshaft position sensor, without a signal from that sensor the ECU does not allow the spark to start the car. Apparently, the ECU waits for this signal to know where the crankshaft is (i.e. pistons) in order to to start "sparking".