Usually the cruise amplifier has failed - replaced mine (had dealer do it actually, it's up under the steering column and I am a poor mechanic) with a rebuilt part I found on the 'net for about $250, far cheaper than a new MB part. Cruise works perfectly now.
If the cruise control on your 1987 300ZX does not work, you might have an issue with the cruise control fuse or wiring. You could also have a problem with the switch that turns the cruise control on and off.
There are multiple things that can go wrong with cruise control, you need to be more specific as to what is wrong with the cruise control in your car.
First step might be checking the vacuum lines in the engine bay. If the cruise control unit does not get vacuum it will not work. Second, the brake light switch might be suspect at that age, it might be sticking or not working. Last, the buttons inside the car or the cruise control unit might have failed.
if it is a standard transmission, check the clutch switch on the pedal, may fix the problem. it did on my accord. i own a calais w/o cruise. hope you find the problem.
one end is going to be of course besind the spedo gauge in your cluster and the other end will be ithe in you transaxle orif you have cruise control it will be at the cruise control transducer.
What is the right order location for relays on a 1987 420SEL Mercedes-Benz?
This is not easy since the cruise cont wires go down through the steering column. I suggest you take it to the garage.
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Mercedes Pérez was born on 1987-08-07.
what is the price of a 1987 260e Mercedes Benz
check your fuses in the main fuse box first, located under bonnet in front of driver. there should be a reference in the fuse box of which fuse supplies the climate control fan. Otherwise if Ok then chk the Relay located behind the fuses
Can u use regular unleaded gasoline in 1987 Mercedes Benz 300e