When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
yesterday started hearing a rattling sounds like metal vibrating on something
does it all the time the car is running but seems worse when turning, driving forward
but still some rattle even in park
originally thought it was the muffler
does the driveshaft rotate all the time even in park?
trying to determine if it is ok to drive 45 miles to the shop tomorrow
if it is the diff think i will send it on a wrecker
i dont feel anything weird at all driving the car, no vibration etc
it is just makes a loud rattling sound...
Umm... driveshaft turns when the vehicle is moving, so no, it does not move while in park.
I guess some of the heat shielding has broken off and causing the rattle.
clvincent were you able to identify the rattle/vibration? I had a similar issue on my 06 E320 (about 215,000 miles at the time) and found the tab on the catalytic converter assembly had sheared... attached image shows tab location (unbroken). On mine the broken half of the tab was still in place, with the bolt holding the two halves together over the crack. This was causing vibrations at low rpms on acceleration and in the situations you described. My solution was to add a washer under the bolt to apply more pressure across the sheared area to hold the two halves tightly together. This has alleviated the vibration for about about 15,000 miles now. Hope this is useful and your issue wasn't more serious.
It doesn't sound like differential to me. Differential on my 2009 E350 wagon started to go around 90,000 miles and it was gradual. It started with a low hum which gradually got louder over time. I really noticed around 95,000 When it became quite loud, particularly around 60-70 mph. There was no rattling as you described, just humming or whining. Let us know what happens.
ptcacik - I believe all model year 2006 e320's are CDI... mine is running strong now with about 232,000 miles.
Also I found a picture of the cracked bracket I referenced in my previous post. Hopefully this helps anyone with the same issue, as it took me quite some time to identify this as the source of the vibration/rattle.
Yikes! I’ll look at that bracket more closely on my 2005 CDI. Where exactly is that? It looks like the transmission bell housing. Of course, once I’m under the car, it will probably be easy to figure out as the catalytic converter is pretty specifically located.
This should give you a good idea where to look (not my photo). The wheel you see at the bottom left is the front passenger. A bracket links the transmission housing to the tab on the catalytic converter, as seen in the center of the photo.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.
Slideshow: From problematic air suspensions to early dual-clutch transmission issues, these specific models and years stand out as the least dependable modern Mercedes vehicles.
