Skip the auto shop - Our mechanics make house calls

Q: Engine shuts down when stopped at red lights

asked by on

When I am stopped at red lights or in stop-and-go traffic, my engine shuts down. The tachometer screen shows: “full accessory power active.” When the engine stops, all of the electrical systems continue to work and there are no warning lights. I can put the car in Park and then restart to drive again. This problem is happening intermittently. My car was made in 2016, so this shouldn't be happening to such a new car! What is causing this engine-shutdown problem?

A: I don’t have the repair information for you...

I don’t have the repair information for your vehicle because it is so new. Since you can put the vehicle in park and start the vehicle, my guess is that you are also cycling the key. The fact that the vehicle restarts after the key is cycled indicates the problem is likely with the onboard electronics. I suggest you take the vehicle to the dealership for diagnosis, since it is still under warranty. The problem could be something as simple as software update.

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

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: Where's vehicle speed sensor B ?

Hello, thanks for writing in about your Hyundai Azera. There isn't a certain answer for the sensor B. Here is the basic diagnostic route of trouble code P2159 to help you better understand the issue. If you'd like assistance with...

Q: Steam and foul odor coming out of vent

Hi. This is a classic symptom of a failed heater core. A cooling system pressure test on the cooling system will help in the diagnosis. Fortunately, the heater core is removed from underneath of the wiper assembly and cowling from...

Q: Can you tell me how the tachcometer numbers correspond to how many miles one is driving? Thank you.

Hello. There are problems with trying to do this type of estimating of speed by a tachometer. The tachometer changes with gear and road speed. You could have someone cruise at certain speeds next to you or match speeds with...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.