Q: The engine revs when the E-brake is used

asked by on

When I apply the E-brake, my car would stop as it should. However, at that moment the engine would start revving. I had the codes read and none appeared. What should I do?

Hello! We will be happy to help. I believe the problem that you are describing is a normal driving pattern. In your particular vehicle Lexus/Toyota implemented a system called Artificial Intelligence Shift Patterning. It is consisted of many sensors which determine when you are braking or when you are going downhill, and when you brake it will downshift to help stop the vehicle.

You can help determine if the AISP is to blame by taking it out of automatic and placing it into S Mode. S Mode will turn off AISP and you will be able to notice a drivability difference. If you drive it and your complaint goes away then you know that; yes, what you are experiencing is normal.

The AISP is very sensitive, if something was wrong with it a code will surely set so I don’t think there’s an issue in that system. If this is not the case and you feel like it’s abnormal, have a certified mechanic diagnose your brake system firsthand. They will be able to fix the problem accordingly once the issue has been pinpointed.

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. The engine revs when the E-brake is used

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: The car pulls to the left after it gets warmed up

Hello! I believe the problem you are having may be to do with the electric steering system. I would suggest having that checked out by a capable technician. Also you mentioned that the alignment has been done. Compare the readings...

Q: Air doesn't get cold enough

There are many components to consider when the air conditioning stops working. The major components are electrical, and blown fuses cut the power. A low refrigerant charge will cause poor function, and a low charge would be very likely due...

Q: Q: Had to manually unlock car & key stuck in ignition

A few different things can cause the vehicle to respond this way. The reason why the key is stuck in the ignition is probably due to the steering wheel being locked. When the steering wheel is locked it does not...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.