Skip the auto shop - Our mechanics make house calls

Q: I unhook the positive cable to the battery to stop the engine from running did it affect any of the electrical components or anyth

asked by on

The car has electrical issues and electrical problems the motor you couldn't shut it off it will not go into Park . I took the positive cable off in order to try to shut the car off I couldn't get to the negative post . The car over heated and started smoking. Do you think that there was any serious damage done . It's off now putting the positive cable back on put the vehicle it in park. And shut the engine off

My car has 35000 miles.
My car has an automatic transmission.

A: You may have caused electrical voltage spik...

You may have caused electrical voltage spikes in the system. If you could not get the vehicle to go in park, then you may have a transmission or computer system failure and can be covered under one of the recalls that may be active on this vehicle. You should contact the local dealer and advise them of your vehicle will not go in park and want recalls done. Do not mention that you disconnected the battery while if was running or you may void the warranty. There may be as many as three recalls active for the electrical system and transmission on this vehicle so get in touch with the dealer.

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: Cold weather makes the motor knock

This is a common problem with Hybrid Highlanders. Does the Check Engine Light illuminate when the knocking occurs? If so, Toyota released a technical service bulletin (TSB) related to cold start misfires. The associated TSB (T-SB-0210-11) covers the inspection, diagnosis...

Q: Car keeps shutting off while im driving but cranks right back up in 3 minutes

If the car just shuts down with no warning, sputtering,etc, it sounds like your ignition switch is failing. It will not set any fault codes or turn the Check Engine Light on. There was a recall on a number...

Q: What if I don't know what's wrong?

Alternators can make noise, due to defective bearings, belt, etc., and still charge the battery. If you are hearing noise from the area of the engine when the car is stationary, if the sound is not really obvious, that is...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.