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Re: Speedometer Problem (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by RA/Bob G. on December 03, 2000 at 03:45:20:

In Reply to: Speedometer Problem posted by Louis on December 03, 2000 at 01:03:18:


i have a 1985 535i and my speedometer is doing a weird thing. when i first start to drive it works fine then about 3 mins into the drive the speedometer dies. after few minutes it picks up again and works fine usually for the duration of the drive. sometimes it won't work for 10 mintues or so but it always seems to work fine when i first start her up. also, when the speedometer doesn't work neither does the cruse controler. has anyone had a similar problem, and if so, how/how much was it to fix?

First,check the plug in the differential and see if it's loose or bad.
Second,pop the guage cluster and see if improving the ground eliminates the problem.
Failing that,it sounds like the circuit board,or maybe the speedo is just giving up.
Early '85 535s use a different board than the later '85 and up cars.You need a production date listed on the driver's door post or VIN number.I have a good late board,or good used,(rebuilt) speedometer/odometers for all e28's if it turns out you need either.


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