Leonardick

I got a 2013 E550 4Matic, I relocated to Portland, Oregon in 08/2020 and the weather here is much colder in Orlando, Florida.
This morning weather turn a bit colder and after warmed up the car for about 3 minutes.
I then reverse out of the parking spot and there is Vibration that I could feel in the whole car, plus the rumbling sounds, not that loud but could hear it.
I drove to my work about 3 miles from where I live and there's huge empty parking lots so I decided to test the car.
As soon as the wheel turns there's Vibrtion and the Rumbling Sounds either Forward or in Reverse.
I used to live in Seattle, Washington during Winter before and never had problems like this time.
I need help to identify the problems or at least some ideas what may cause these problems.
Any help would be much appreciated. Merry Xmas.

KEY08

Merry Christmas to you. I doubt it’s a transfer case issue, since the whole car is shaking. Check the front half shafts ( axles) . Worn or bad axles will shake everything but the steering wheel. How many miles on your car?

Leonardick

Thanks for you infos. It's 120k

KEY08

Yikes. Ok, it’s possible you are having trouble with the 4Matic transfer case. Fair warning, this could end up requiring a new transmission, due to the configuration of the transfer case on the modern 4Matics.

Leonardick

Dang, would be bad case scenario and what is the likely that I have to spend for a new tranny?

S. Madman

Have you gotten your fluids changed? Cold will bring all sorts of gremlins on any car.

Mines sleeps on a garage so my fluids stay the same, but I am in Florida.

Harsher weather will necessitate more fluid changes.

cetialpha5

Well it's also possible that it's the motor mounts which are also pretty common failure items. Probably need to get it up on a lift to check everything out, there's a few other possibilities as others mentioned.

bmwpowere36m3

That was my first thought too, when he mentioned backing up. However, I wonder it’s its only when the wheels are turning, turned and/or vehicle is in motion.

Turning the wheel puts load on the engine (via ps pump) and at idle it’s more perceptible. It can amplify motor mount vibration and worn accessory belt system (idler, belt and/tensioner).

Arrie

PS pump adds load only as long as the steering wheel moves. When wheel is kept still with front tires in angle the pump does not pull load.

By the OP's first post vibrations appear only when car turns at slow speed in parking lots etc. This is about speed difference between front and rear axles so the #1 thing is to look at the center differential. It could be the transfer case too, which gets more load with speed difference between axles.

If it was motor mounts the problem would show up also going straight.

This same issue is discussed in thread "What are my odds".

Leonardick

As member KEY08 mention above I think he was right about xfercase. Today the vibrations occurs as soon as the car rolling.
Also at one of the stop after I release the break pedal I feel the rolling kick, so that possibly the xfercase.

Leonardick

Thanks guys. I'll have the car toll to the shop on Monday and will update later.

KEY08

References to the Power steering pump above should be moot as the OP more than likely has an electric assist steering, no pump.

pierrejoliat

IDK, I might check the axle u-joints first, but if one was bad it would likely make the vibration seem to come from one corner or the other {left or right}