Removal and Replacement

12 63 520 - Replacing DME master relay (M54)





Necessary preliminary tasks:
- Switch off ignition
- Connect DIS Tester





Release screws (1).

Installation:
Tightening torque 12 90 4AZ [1][2]Central Electronics Box.

Remove cover (1).





Arrangement:
1. DME master relay





Notes on troubleshooting:
If the starter motor cranks the engine during the starting sequence but the engine fails to fire, then:
1. Check engine fuses
2. If fuses are blown, replace them completely with fuse holder
3. Find out why fuses have blown
Continue troubleshooting as per DIS instructions.