Fuel Pump Relay

The fuel pump relay on 560 SL models is located behind the glove compartment. For 420 and all other 560 series, the relay is located on the left rear side of the engine compartment, in the relay component compartment. For 190E, 190E/16 and 300E series, the fuel pump relay is located in the engine compartment on the right rear firewall.

The fuel pump relay has the following functions: cold start valve activation, RPM limitation and kick-down shutoff.