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Questions and Answers

1986 BMW 325 MPG Gauge Problem

Q. Recently I been having problems with the MPG gauge. When I am running the engine, the MPG gauge goes to high to low and also does the RPM gauge. What do I need to do?

  • 1986 BMW 325i
  • 15,000 miles
  • manual transmission
  • 2.5 liter engine
1986 BMW 325 MPG Gauge Problem


There was a TSB issued on this problem. You will need to take it to a BMW dealer to have the problem repaired. Have them reference:

Group: 62 Instruments
Bulletin Number: 62 03 86 (1229) Page 1 of 2
Issued:August 1986 Technical Dept. Montvale, NJ
Subject: Erratic Instrument Cluster Operation

The problem is either a bad coding plug for the instrument cluster or instrument cluster printed circuit board.

Additional Information provided courtesy of AllDATA

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