Strange ticking noise when engine is switched off
My local dealer agreed to investigate the loud ticking noise that my 2014 Mercedes-Benz C-Class Estate makes for five minutes after the engine is switched off.
The noise seems to come from the bottom of the car at the rear. A diagnostic test did not reveal any fault and they they had no explanation for it saying it was 'just one of those things' and 'nothing to worry about'. I am not so sure. Is it a sign of trouble? Should I leave it or press the dealer for an adequate diagnosis?
The noise seems to come from the bottom of the car at the rear. A diagnostic test did not reveal any fault and they they had no explanation for it saying it was 'just one of those things' and 'nothing to worry about'. I am not so sure. Is it a sign of trouble? Should I leave it or press the dealer for an adequate diagnosis?
Asked on 25 May 2015 by Torrepinerolo
![](http://images.honestjohn.co.uk/imagecache/file/pad/120x120/media/16477727/537450_458533677529584_1473549666_n.jpg)
It will probably be either a water pump continuing to pump water through the turbo or an oil pump continuing to pump oil through the turbo bearings as it spools down and cools down. A Mercedes mechanic will be able to tell you. A Mercedes service receptionist probably won't.
Similar questions
![](http://images.honestjohn.co.uk/imagecache/file/pad/75x75/media/15217131/alan_polaroid.jpg)
Driving down a country lane I hit a deep pothole that was covered by a puddle. I was probably going around 25-30mph. My front wheel on the passenger's side is now rattling/squeaking. It’s not constant,...
![](http://images.honestjohn.co.uk/imagecache/file/pad/75x75/media/16477727/537450_458533677529584_1473549666_n.jpg)
My Peugeot Partner Tepee recently developed a knocking noise from underneath the vehicle when I go over bumps, rough road etc. I've had it looked at by two different garages and they can't figure out where...
![](http://images.honestjohn.co.uk/imagecache/file/pad/75x75/media/15217131/alan_polaroid.jpg)
My Mk5 Volkswagen Golf, with hybrid stage two turbo, was making a whistling noise. It's now stopped and won't restart, plus lost all oil. The exhaust shows signs of oil in end pipes. What could this be?
Related models
![](/media/_v6/8838054/Mercedes C-Class Estate (1).jpg?width=115&height=75&rmode=crop)
Fantastic depth of quality, lovely cabin ambience and improved interior space, very refined, quiet and composed – even the four-cylinder diesels.