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Matt
Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 20776
Experience:  BEng hons Mech engineering, in auto industry 22 years
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the horn on my ml 270 cdi has stopped working ?

Resolved Question:

the horn on my ml 270 cdi has stopped working ?
Submitted: 2 years ago.
Category: Mercedes
Expert:  Shantal-Mod replied 2 years ago.
Hello,

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Thank you,

Shantal
Expert:  Matt replied 2 years ago.
eHello

1st thing to check is if the horn fuse in the underdash box is blown or not - if it has then try a fresh one


if that doesn't help then locate the horn unit / siren which should be in front of the radiator behind the front bumper - check its connections are clean with no corrosion then try putting a fresh 12V wire direct from the battery to its poistive terminal to see if it works or not as they can fail from internal corrsoion
Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 20776
Experience: BEng hons Mech engineering, in auto industry 22 years
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