Why is my Mercedes Benz horn not working?
If you have no voltage to the horn, the problem could be with the wiring, horn button, clock spring, relay, CAN bus or SAM module. If you suspect an issue with the CAN bus or steering wheel controls, your best bet is to test using a Mercedes-Benz scan tool.
Why does my Mercedes Benz have no sound?
Troubleshooting the fiber-optic loop is the next step that you should do if removing the fuses does not solve the no-sound problem. The fiber optic cables are used to transmit the sound signal of your Mercedes-Benz between the different units for better sound quality and faster transfer rates.
Where are the fuses on a Mercedes Benz high tone horn?
Located in the left rear of the engine compartment (red arrow) is the front SAM. For my vehicle, fuses 53a and 53b are for the horn relay. Check that both of those fuses are OK. If both fuses are OK, remove the horn relay and jump terminals 30 and 87 together using a fused jumper wire.
How many amperes does a Mercedes Benz horns have?
The horns produce sound levels around 107-109 decibels and have a current draw of 5-6 amperes. Mercedes-Benz W211 model horns are arranged in pairs, sounded together to produce two notes.
If you have no voltage to the horn, the problem could be with the wiring, horn button, clock spring, relay, CAN bus or SAM module. If you suspect an issue with the CAN bus or steering wheel controls, your best bet is to test using a Mercedes-Benz scan tool.
The horns produce sound levels around 107-109 decibels and have a current draw of 5-6 amperes. Mercedes-Benz W211 model horns are arranged in pairs, sounded together to produce two notes.
Located in the left rear of the engine compartment (red arrow) is the front SAM. For my vehicle, fuses 53a and 53b are for the horn relay. Check that both of those fuses are OK. If both fuses are OK, remove the horn relay and jump terminals 30 and 87 together using a fused jumper wire.