Electronic control unit problems

Electronic control unit: Engine Control Unit. It regulates all the aspects related to the engine's proper functioning.
Read more
Related problems:

Top problems

2013 Hyundai Elantra limited push button cranks but won't start

Hyundai Elantra 2013  169 miles
I have a 2013 Elantra limited. It's a push button start. It does not have a key start. The car does not start. It cranks up but will not turn over. The security light stays on. It supposed to go off after 3 seconds. A mechanic told me that if the security yellow light with the picture of a car and a key stay on, that keeps the car from starting. I change batteries in hob. I tried both key hob and held key to ignition switch and it still won't start. I believe the problem is with the immobilizer or the key hob. I think one of them needs reprogramming. But i am not sure.
pontig6 from United States 4 years ago  
PO
20 reports 
pontig6 from United States 4 years ago
Car crank’s but don’t start. Security light stays on. I check all relays and fuses and reprogram keys and had locksmith scan car with computer and car 2013 Elantra still won’t start... there is no codes in scan tools
Bible from other 3 years ago
Please help me out.im having the same problem
pasos from United States 2 years ago
2013 elantra was parked in a lot that got flooded. trunk opened, windows rolled down, and all lights came on. now the car won't start at all. the bcm, mds, smart key assembly were changed. now all lights come but engine won't start,
HBM9891 from India a year ago
Same problem, still don't know to explain it to my mechanic
Wasim Ahmad from Saudi Arabia 4 months ago
Hyundai Elantra model 2024 security light not working
1
Comment

2016 Elantra immobilizer problem SolvedSolved

Hyundai Elantra 2016 Automatic  95000 miles
-Immobilizer security light is flashing
-ignition lights are off
-Engine is not cranking
James Elorm from other 2 years ago  
JA
2 reports 
Solved
Best answer (according to James Elorm)
James Elorm from other a year ago
I replaced the body control unit and everything else is working fine.
Comment

Starting problem.

Hyundai Elantra 2006 2.? 249000 miles
Battery light came on, went off parked it. Get in the next day and radio wasn't working. Drove it, got out went to leave, radio worked, low beams went out. Went to troubleshoot the low beams, heard a hissing from the battery, put new one in, didn't start, had the alternator checked, bad, so replaced it, still no start. Took the starter in to get checked. It passed. So I waa thinking it's a loose wire or a bad ground or something. Or the ecu. Took the ecu out and it looked good, (no obvious burn marks. Haven't found any loose connections or bad grounds. Not sure what to do next, I wanna try everything before I send in the ecu, it's expensive. I'd hate to send it in and pay, and there not be anything wrong with it. Any ideas moving forward??
Sharedconfusion from United States 3 years ago  
SH
3 reports 
Sharedconfusion from United States 3 years ago
I changed out the relays and it started. There is a drain on the battery somewhere I think
muskmelon from United States 2 years ago
If you keep having the problem, I'd get yourself a cheap multimeter and do a parasitic draw test. I had several issues starting my car and got halfway through the fusebox with a multimeter before I realized I left my wireless OBD2 reader in like an idiot, and it was sucking power.
Comment

Top cv uae

Hyundai Elantra 2017 engine 222222 miles
Top CV UAE empowers individuals by creating career documents that reflect their true professional potential. Our https://topcv.ae/ experienced team researches industry expectations and aligns every CV with current hiring standards. We provide tailored resume writing, LinkedIn profile writing, cover letter development, and profile enhancement services. Every document is carefully reviewed to ensure accuracy, readability, and relevance. By focusing on both presentation and content, we help candidates improve their chances of securing interviews and advancing their careers.
ibtesamabdullah from United Arab Emirates 3 months ago  
IB
1 reply 
veneratedblind from United States 2 months ago
The gameplay in Doodle Jump revolves around precision, timing, and quick reflexes. The Doodler jumps automatically, so your task is to guide it safely from platform to platform by moving left and right. Your goal is to stay alive for as long as possible while climbing higher and earning a bigger score. https://doodlejump-2.io
Comment

Are You a CV Writing Specialist in Ireland Looking to Connect?

Hyundai Elantra 2016 none 423523535 miles
Are you a professional CV writer, career coach, or HR specialist based in Ireland? Join a growing community where industry experts discuss the latest CV trends, ATS optimization strategies, and formatting best practices. Curious how others handle tricky client cases, from career changers to executive-level rewrites? Wondering what's really shaping the Irish job market and recruitment trends right now? Whether you're freelance or part of an agency, isn't it time you had a space to learn, network, and sharpen your craft?
For more visit here: https://www.cvireland.com/
ciararoisin from Ireland 3 days ago  
CI

How can students evaluate nursing writing services?

Hyundai Elantra 2023  3100 miles
Always look for support that balances clinical accuracy with strict academic guidelines. Finding reliable nursing writing services involves the evaluation of the following benchmarks. 1. Credible services utilise current evidence-based content with proper referencing. 2. Reliable services craft peer responses to meet the required standards. 3. Credible support offers rapid turnarounds while meeting strict deadlines. 4. A right service ensures 100% human-written content with no use of AI to maintain your academic integrity. 5. The platform must offer secure data handling and strict privacy pro… Read complete
natashajohn from United Kingdom 13 days ago  
NA

Falla al arrancar

Hyundai Elantra 2021 Azul 152852 miles
Que cuando lo arranco se aoga no siempre pero con mucha frecuencia y en altas funciona hormas a dar fallas en silencio 1 y 4 pero tiene todas las bujías nueva y los coi
Junior from Dominican Republic 16 days ago  
JU

Válvula IAC

Hyundai Elantra 1999 Manuel, motor 2.0 Beta 124000 miles
The ECU doesn't recognize the IAC valve, so the car is always accelerated.
LAMZ from Honduras 2 months ago  
LA

Fully locked out of car

Hyundai Elantra 2015  118 miles
Is there a security feature?
I was doing some re-wiring and completed it. The next day I went to go to work and I am completely locked out of car. My keyless entry will not work now will my physical key
Signed:lost and confused
Frank from Canada 8 years ago  
FR
2 reports 
Problems with a Elantra? Share them
Submit commentCancel
Submit replyCancel


Find what you needed?

Thank you!