Q: Downshifts suddenly automatic locks

asked by on

I recently had my automatic transmission repaired. It will drive fine for a while and then all of a sudden will downshift and stay like that until my car is turned off and started again. My automatic door locking has stopped working too. Do you know what’s wrong, and how I can fix these problems?

When you encounter the problem try and see if your cruise control works. If the brakes lights stay on, it will cause the cruise to be inoperative and affect the overdrive of the transmission and door locks autolock function. Come to a stop and put the vehicle in park. Check to see if the brake lights are on. If they are, then you may have a bad hydraulic brake assembly causing the problem. It may need overhauled or replaced. If you need help having any of these repairs done, a certified expert from YourMechanic can come to your car’s location to inspect the shifting problem and guide you with the correct repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Downshifts suddenly automatic locks

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: No sound when the lock and panic key buttons are pressed.

After checking the wiring diagrams for the horn and antitheft system for your car I do not see where they connect in any way. I do not think the vehicle is equipped to sound the horn if you have the...

Q: Belts keeps breaking - 1992 Mercury Capri

Hello. If this all started after the alternator was replaced, then that is more than likely the problem. If the alternator is defective and has an internal bearing failure then this will occur. Also, if the alternator is not mounted...

Q: Transfer case won't shift into gear - 2002 Mercedes Benz G500

There seems to be a deep electrical bug in the vehicle and unfortunately these problems require a case study of the vehicle. Some facilities will offer the service where they will keep the vehicle overnight and drive it in an...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
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...