Wheel Sensor
Thread Starter
Newbie
Joined: Dec 2010
Posts: 1
Likes: 0
Mercedes Benz GL450 2008model
Wheel Sensor
My ABS and ESP dashboard lights have been popping up and off on their own. Mechanics just informed me I have to change the four wheel sensors...........pls whats that?
Junior Member
Joined: Sep 2010
Posts: 60
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1995 gt
The ESP and ABS systems use the wheel sensors as one of their inputs. If any of them are inopperative it will flash your ABS and ESP lights. In some cases it will cause both system to not work, cause they are not receiving correct information. Are all the sensors bad?
Super Member
Joined: Feb 2009
Posts: 711
Likes: 11
From: NW corner of CONUS
2008 GL 320 CDI, 2004 VW V10 Touareg TDI
arcatureta - are you in or out of warranty on your '08? Wheel sensors count pulses that vary in frequency when the wheels turn. Without consistent information the ABS and electronic stability programs don't have good info with which to work. Clearly they are a safety system input. Should be covered by warranty.
Senior Member
Joined: Feb 2010
Posts: 331
Likes: 3
2011 GL350 Bluetec, Irridium over Black Leather
What DOES happen is that they end up with little metal particles all over them over time. They usually just need to be cleaned off. The mechanic should know that.
- Mark
