Skip the auto shop - Our mechanics make house calls

Q: esp bas light on dash keeps coming on

asked by on

the bas/esp light on my 1999 sl500 was coming on intermitantly.Then going about 15 miles an hour one day my brakes locked op and the triangle in the center console flashed I replaced the brake light switch ,turned the stop to stop it went out. but when i start to drive it they comes back on.no fault codes but a possible output shaft speed sensor. I shook both front wheels and the passenger side has some play,could that cause this?
My car has an automatic transmission.

There is a TSB (technical service bulletin) for this issue. It does say the brake switch is the source of the problem. At least it can be the source of the fix. But it doesn’t say replace the switch. Apparently there is too much travel in the brake switch and the distance the switch travels is compared to other vehicle parameters involve with stability control. The TSB outlines a procedure to add a spacer to the brake switch.

There are four separate TSB’s on the stability control for your car. Each has corresponding codes. The one I mentioned above is the only one that states the esp and bas lights are illuminated. The others only light up the esp light. If this is the case, they are outlining problems with the steering angle sensor.

Either way, this is a highly technical system and I recommend booking an appointment with a qualified technician. I recommend the following inspection to help you out; Taction control light is on which can be performed at your home or office. This inspection isn’t titled exactly your problem, but the skill set for you repair is the same.

Good luck!

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: I'm looking at 8-10 year old MB E320 in diesel and gas. Which has the overall lower cost of ownership and greater reliability? Tha

Hi there. In regards to overall service and maintenance, gasoline powered vehicles have fewer components that require routine service. The cost of maintaining a gasoline powered vehicle tends to be slightly lower. In regards to fuel economy, the turbo diesel...

Q: Why is my car blowing hot air and cold air at the same time?

The answer to this depends on whether you have switched on heating, cooling (A/C) or neither. In one scenario, for example, if you have not switched on the A/C system, but the A/C is running as confirmed by a visual...

Q: Transmission slipping need to swap 2001 GMC Silverado

Hi there - yes, both of you have the 4L60E transmission (w/4WD rear housing). Since you both have the 4.8l engines, this should be a bolt-up project. Good luck with it!

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...
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.