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: Why does my is350 2006 lexus start but then dies after 2 seconds. Then after I try to start it again all I get is just a clicking

You should have the theft system checked to see if it is activated first and then have a mechanic like one from YourMechanic test the battery and starter circuit for you. The problem sounds like the battery is low on...

Q: 2006 ram1500 will not go into gear or no brake lights

In your application, the brake light switch may be integral to the circuit that communicates with the anti-lock brake system as well as the shifter and ignition locks. If the brake light switch has failed, that circuit failure can prevent...

Q: Car overheating due to nonworking fan

The fan on your vehicle is an electric fan. It comes on as needed to help cool the radiator when the coolant reaches a pre-determined temperature. This is usually around 220 degrees. Fan motor failure is common and not a...

Related articles

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...
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...
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.