# Component location - Relays

Main fuse panel on left inner fender. |
Fuel pump relay, Oxygen sensor heater relay and Main relay are all located under the black plastic cover running across the upper edge of the firewall. Pull off rubber seal around engine bay, pull off main plastic cover across firewall then pull relay cover up from behind coolant expansion tank. |

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson