Mercedes Benz E320 owners have reported 2 problems related to horn assembly (under the electrical system category). The most recently reported issues are listed below.
Vehicle was acting normally up to incident. Entering highway accelerating like normal and pulled out in front of tractor trailer when suddenly car had dramatic and frightening loss of power. Full throttle did nothing. Downshifting did nothing. With truck horns blaring and near collision, I pulled off the road. Restarting cleared the problem. Dramatic loss of power has occurred three more times with no warning nor check engine light. Now light comes on with egr out of range code. Discussing this with other mercedes diesel owners points towards soot clogged egr valve and soot clogged intake manifold. How such a problem could occur so frequently at such a low mileage with a company known for diesels is unknown.
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all problems of the 2005 Mercedes Benz E320
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2005 mercedes E320 steering column wiring failure ( 'clock spring" & steering wiring module & srs air bag "failure). Partial repair corrected loss of turn signals, horn and speedometer at a cost to me ( owner of $749. ). One day later srs (air bag fail indicator) came on again. Back to dealer who said a wiring harness in the steering column is also bad & needs to be replaced at an additional fee of $516. But that they would do repair for $429. ??? did not affect repair yet. Just noticed defect investigation?? what should I do ?? (failure light for srs is still on etc. ). Can I recover (past $749) and future? ($516 / $429) costs???.