Q: Can't turn off immobilizer on 2002 Jetta 2.0l.

asked by on March 13, 2017

Recently installed water pump on vw jetta. Accidentally installed timing gear one tooth off. Reset timing to original setting. Car began to stall two days after water pump install. Battery was dead/replaced. Immobilizer light prevents car from running for more than two seconds then shuts off. Tried resetting computer in multiple ways. Leave battery unplugged for four hours, connect battery (with charger) leave key in on position for thirty minutes to see if immo light turns off. Immo light turns on as soon as key is in on position.

My car has 200000 miles.
My car has an automatic transmission.

Car is hard to start Inspection $79.99 - $89.99 Get a Quote

The Immobilizer System Control has failed and is stuck in lock mode. I recommend either flashing the Immobilizer System Control or replacing it. If you need further assistance with your engine not starting, then seek out a professional, such as one from Your Mechanic, to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Engine is spitting and sputtering at startup and wont accelerate

Hi there: When you use an additive to clear up a problem and it works, it's typically an indication of a dirty fuel injector or throttle body issue as opposed to other mechanical component issues. An additive has cleaning chemicals...

Car won't start; battery OK

Hello. If the engine is cranking over and the car is not starting then it is not a battery issue. The most common cause of this on your car is a bad crank sensor or a fuel pump that may...

Headlights not coming on

Hello. Most of the time when both lights stop at the same time on this vehicle, it is because the switch has lost its power supply. You would need a voltage meter to run some tests on the circuit. Most...

Third ignition coil not getting power

Coil packs are usually mounted on an ignition control module that controls the signals for the coil packs to fire. If the coil is good just not working the module may be the problem. Along with the module being tested...

interference motor time jumped one tooth do you thing posting and rods are damaged belt did not break

A one tooth jump will often leave you still in the safe zone. Obviously, don't run the engine though to avoid an additional "jump" which will bring you more into the inteference danger zone. In other words, quit while you...

Weird Noise from Transmission

You did not mention if you have a manual or automatic transmission. The shift lock will make a click when pressing on brake and may be louder than normal and need to be replaced.

Fail safe Mode engaged with the engine shaking. Possible over revving of the engine

Your vehicle is in limp mode to prevent engine damage from the overheating. I suggest you let the motor cool for a while before trying to drive it again, if at all. I also suggest having a certified technician, like...

Clutch pedal goes to the floor and doesn't return

Hello, thanks for your question. You could watch the clutch fluid as it mentions in the test, but this really doesn't tell you much. Most of the time this is caused by a bad clutch master cylinder. If the fluid...

New car oil consumption before 1st oil change

Hi there. Either the positive crankcase ventilation valve (PCV) or the turbo has excessive oil blow by. Check the PCV valve and see if its working. Check the air filter to the engine and make sure that its dry and...

Related articles

What Do the Immobilizer Warning Lights Mean?
The immobilizer warning light turns on if your anti-theft system does not recognize the car key being used, if it's the wrong key or low on battery.
The Best Used Cars to Buy for First Time Car Owners
Owning Owning your very first car is an exciting time in a person’s life. Likely you want to put a lot of thought and research into the process to ensure you get something that meets your needs, is fun to...
Top 10 PZEV Cars for Eco-Friendly Drivers
Teddy Leung / Shutterstock.com The whole idea of a PZEV (that is, a partial zero-emissions vehicle), seems paradoxical. You’d think it’d have to either be zero-emissions or not in the category at all. But as contradictory as...