Skip the auto shop - Our mechanics make house calls

Q: Traction control light is on, 2000 BMW

asked by on

The traction control light came on and stays on. I immediately thought a wheel speed sensor may be the cause but if that were the case wouldn't the ABS light also be illuminated? Regardless, what else would set the light? Steering angle sensor? DSC unit? Fuse? Thanks

My car has 105000 miles.
My car has an automatic transmission.

As you know, your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car’s ECU. When the ECU senses an abnormal speed given specific conditions, it engages the ABS or traction control as needed to control the vehicle properly and safely. Occasionally, these sensors can fail or become faulty, working intermittently and sending inaccurate signals to the ECU. When this happens, you may experience the symptoms you have described. In your case only the traction control light comes on which may suggest that the traction control module may not be working properly. I would suggest having a professional from YourMechanic come to your home to diagnose your ABS and traction control system to determine the cause for this.

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: Can an automobile’s coolant system malfunction if a EWS Control unit is calibrated wrong?

Hi Bob. The EWS control unit is a security system, which to my knowledge has no relation or impact on the cooling system. The only thing that could impact the cooling system would be if for some reason the coolant...

Q: What would cause the MPG gauge to fluctuate on a 1999 BMW 323i?

Hello, thank you for writing in. There are several different systems that interact with the fuel system which effect fuel economy. The first that you will want to check is the ignition system. Make sure your spark plugs are new...

Q: a lot of play in rear axle.

Hi there. The rear end pinion engages with a ring gear and the other end of the pinion is supported on a tapered roller bearing. If there is any radial play in the pinion or axles itself, there is a...

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...
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...
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.