Skip the auto shop - Our mechanics make house calls

Q: Wireless locks occasionally stop working, battery died several times

asked by on

Hello. I've been having issues with the keyless entry feature in my car. It occasionally stops working. While I was driving, it happened that the doors were unlocking and locking on their own. I took it to the dealer and they had the ground wire replaced, which didn't help much as the issue persists. Also, my battery keeps dying for no apparent reason. The mechanics couldn't find anything wrong and I don't know what to do. Do you have any suggestions?

A: Hello. I have ran across this a few times o...

Hello. I have ran across this a few times on this vehicle. Most of the time it is caused by a failing ignition switch. If the switch is failing internally then it will lose contact randomly and this will occur.

To diagnose this, I typically start by accessing the switch and checking for a voltage drop in the switch, indicating that it needs to be replaced. If the switch is fine then it may be an issue with the control module which is not as common. If you need help with this, feel free to reach out to a certified mechanic who can come to your home or office to diagnose your battery and locks.

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: brake light issues

Thanks for writing in about your 2006 Mitsubishi Galant. It is possible that there is a short in your electrical system or possibly a bad ground. I suggest having a certified technician, like one from YourMechanic, perform electrical testing to...

Q: The dealership accidentally cut my car off, can I get a jump to start it again?

A jumps start certainly will not hurt your vehicle, however this suggests that you may have an issue with a weak or dead battery or possibly a bad alternator. As you may know, the alternator is responsible for charging the...

Q: Trouble starting - 2004 Hyundai Elantra

Hey there. Your symptoms may well describe a fuel supply issue - specifically fuel pressure. If the fuel pressure regulator and/or check valve are not working properly, engine start, especially after the vehicle has been sitting for a bit will...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...