The power line or relay that feeds them power. Check for a bad fuse.
SOURCE: speedometer and odometer not working 92 audi 100
I had similar problems with speedos in two 1990 Audi 100s, it was some time ago, but the contacts on the circuit boards on the back of the speedo deteriorate and do not give a good contact. I bought second hand speedos, only to find they had similar problems, eventually it was very easy to fix, I shaved matchsticks to chisel points and pushed them into the circuit boards to add pressure on the contacts and improve connection. After that repair drove the cars for a few years and the problem did not recur. It was a long time ago and I cannot remember exactly where the matchsticks were placed but look for soldered points near the edges of the boards. Regards, Michael
SOURCE: speedometer, water temp gauge, and
A common problem on the 2003 focus are the electrics, i had a problem recently where the displays where not functioning, i took off the panel, checked the iso connector and before putting it back in i gave it a quick spray with wd40 and it al seemed to work, been in contact with the garage and for a new unit with callibration you are looking about £140 or so with labour and parts
I had a similar problem with a 2001 Saturn. We checked every fuse and they were all fine. We finally did a 'reset' on the car's computer by disconnecting the battery and reconnecting it a few minutes later. Everything was back to normal after that.
SOURCE: intermittent problem speedo/odometer
would change the ECU with the chip from the key from a car in scrapyard ,but before you get carried away try another seperate earth on the back of the speedo printed circuit board ,i wouldnt mind betting this is your problem
SOURCE: speedometer, gas gauge, odometer, rpm gauge not working
My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do
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