Where is the secondary air pump relay for Mercedes-Benz R400 located?
1 Answers
Mercedes-Benz R400 secondary air pump relay is located in the right fuse box in the engine compartment, where O is the air pump relay and 32 is the air pump fuse. Relay Overview: A relay is an automatic control device where the output undergoes a step change when the input (electrical, magnetic, acoustic, optical, or thermal) reaches a certain value. Automotive relays are relays used in vehicles. Relay Characteristics: Automotive relays have high load-switching power, impact resistance, and vibration resistance. The power supply in vehicles is mostly 12V, and the coil voltage is generally designed for 12V. In the engine compartment, the ambient temperature range is required to be -40°C to 125°C, while in other locations, the ambient temperature range is -40°C to 85°C.