Skip the auto shop - Our mechanics make house calls

Q: Immobilizer keeping car from starting.

asked by on

The immobilizer is on, so my car won't start.

A: Your car may need the service harness and r...

Your car may need the service harness and relay installed into the wiring of your ignition switch; the tech bulletin is RJT 1678, to get the parts list and directions. This part is a fix to a few different problems peculiar to your car’s model and year. The parts would need to be installed after a diagnostic check, to see if no other problems with system are present. I would recommend hiring a certified mobile mechanic, such as one from YourMechanic, to inspect your car’s starting issue with this information in mind.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: Service light on, high temperature, heat off

The only way to gain insight as to what happened it to retrieve the diagnostic trouble codes associated with the Check Engine Light. Even if the Check Engine Light is not on anymore, you may be able to retrieve history...

Q: Car jerks when shifting

This is not a normal thing to expect. Ford does have a TSB out for a faulty pressure control solenoid depending on the production date of your vehicle. This can cause harsh shifting and delayed shifting into reverse to occur...

Q: Already checked timing Belt, but now it don't recognize the computer immobilizer.

Hi there. Try reprogramming the key fob to your vehicle. Click here to view the procedure on reprogramming your key fob. If the key is programmed to your vehicle, then the immobilizer controller may need to be replaced. I recommend...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...