My cruise control will not engage. It was fine and then it just would not engage anymore. The light comes on but when I releave the gas pedal it just wont hold it. Is there a fuse or something for this.
The most common solution is to replace the brake light switch . The switch has 3 sets of contacts one set is for the cruise control. If the cruise control part is at fault the cruise control will not engage. The switch typically costs from 10 to 15 dollars.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hi. Sorry but the question isn't clear. I know that the cruise control can be repaired. But what type of diagnostic information are you looking for? To find the source of the failure my shop would run diagnostics. Possible failures would include faulty blake light switch, worn or dirty cruise control switch, broken clock spring or issue with power or ground. Please write back and let me know what you are looking for. I will be more than happy to help.
Try checking the small switch at the top of the brake pedal. There may be two one for brake lights and one for the cruise control. To ascertain what is what, pull one wire off and see if brake lights work. If not, then the other switch controls the cruise control disconnect and engage..I you have a DC test light check to see if power is on on both side of the switch with brake pedal up. If so, depress pedal and check power on the other side there should be none, if there is the switch is defective.
Cruise controls can cease to engage if the clutch or brake light cruise switch are out of adjustment. If this happens, try placing you foot under the clutch pedal (if equipped) and lift up on it (toward you) and hold it while engaging the cruise. If it now works, it will likely cut out when you remove your foot from under the pedal. Check the brake pedal in an identical fashion. Adjusting the switch at the pedals can often solve he problem. Some vehicles (Honda, Acura, Ford, to name a few) have a plastic insert that mounts in the pedal arm which presses against the switch. These can become brittle and fracture into pieces. My Acura has little pieces of blue plastic on the floorboard around the brake pedal one afternoon and I noticed the cruise didn't work. It was the pieces of the insert that had come to pieces preventing the cruise from coming on. I replaced the insert and no more problem with the cruise.
If the cruise lamp comes on and the cruise does not set i would advise inspecting the cruise cable and make certain it is not broken, if ok the the servo has likely failed.
You're not gonna believe this but if the center brake light is out on a 2000 ML320 the cruise control will not work. I went over the owners manual with a fine tooth comb and not once did it mention the center brake light in conjuction with a malfunctioning cruise control. The book did state however to bring the car into an authorized Mercedes Benz dealer.
×