Horn intermittently not working and alarm issue

07-22-2012, 03:30 PM

#1

sf280

MBWorld Fanatic!

Thread Starter

Join Date: Dec 2002

Location: SF

Posts: 1,058

Likes: 0

Received 0 Likes on 0 Posts

Santa Cruz Blur

Horn intermittently not working and alarm issue

Yesterday it was in the upper 90's temperature. When driving down the freeway I needed the horn and when I pressed it did not work. I tried a number of to,es and no horn. When I got off the freeway I tried the horn again and did not work. A few minutes later I tried again and it worked.

We then parked the car for a few,hours and again the horn stopped working. I got home and parked the car and turned it off. 5 minutes later I went to start the car and the alarm went off, the car started but the horn was beeping and lights were flashing. Turned off the car and the alarm went off. Started var again and alarm went off. I then turned it off, locked the car with the key, unlocked and them started and this time no alarm. Checked the horn and it did not work.

Went to start the car this morning with no alarm issues, but horn once again worked and did not work.

This is a 2007 R350 with 66k miles that is still under starmark. Any thoughts on what this could be for when I take it in? Seems like an electrical issue, but to sure where the horn function and alarm come together.

Thanks

Reply Like