Skip the auto shop - Our mechanics make house calls

Q: Key switch not working

asked by on

The ignition switch won't start the car.

A: The ignition systems on these cars are equi...

The ignition systems on these cars are equipped with the PATS system; if the anti-theft system sees the key as not programed, then the vehicle will not start. Look to see if the Anti-Theft Light is illuminated. If it is, then try another spare key to see if that works. If it does, then the key that did not work will need to be replaced. If the car still does not start, then a Worldwide Diagnostic System tester needs to be used to see why the anti-theft will not accept the key. I recommend that you have a mechanic, such as one from YourMechanic, come by and diagnose the issue with your ignition switch, and recommend the best path to repair.

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: Jeep Cherokee Sport only starts by keying the ignition

It depends on what's happening. If you are cycling it, when you cycle it and nothing happens the starter doesn't go on and start the engine--then either the starter motor is bad, the ignition switch is bad or you've got...

Q: Car won't start after someone tried to steal it

Two systems in the column need to work for the engine to start. The ignition switch, and the anti-theft system. Your car has some version of the Passlock anti-theft. The ignition switch reads a specific resistance of your key and...

Q: Overheating

You should have a mechanic check the cooling system for a stuck thermostat or fans not working. If you are loosing coolant then a pressure test will show where it is going. You may have a blown head gasket or...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...