Comments on: 722.9 7G Tronic Automatic Transmission Problems and Solutions

By: charles mcclain

charles mcclain — Wed, 31 Jan 2018 14:31:40 +0000

I have a 2011 cls550 and while I’m driving at times I hear a strutting sound
Under my car that sounds like tires , but it’s not tires and it has a slight jerking
during that time.

By: João Pedro Ribeiro

João Pedro Ribeiro — Sun, 28 Jan 2018 00:00:59 +0000

In reply to Ntembeko Makinana. Hey. Do you know already what was the problem? I have the same thing!

By: Mike Tullett

Mike Tullett — Wed, 13 Dec 2017 10:33:12 +0000

The gearbox on my CLK63 AMG (not black series) has started to make a rumbling noise and vibration when placed in reverse. Any idea what could be causing this?

By: Alex

Alex — Fri, 20 Oct 2017 01:14:28 +0000

In reply to Andy. If your selection lever is on the steering column, it could be you accidentally pressing the "parking" button on the lever which is easy to confuse with the similar button on the turn signal lever opposite side (for windshield washer). If this happens while still moving, the transmission will go into neutral and require engine restart to become operational again

By: Ntembeko Makinana

Ntembeko Makinana — Wed, 27 Sep 2017 08:54:53 +0000

I have a 2013 W204 (C200CDI) with a 7speed distronic plus gearbox. Last week I noticed slight ‘discomfort’ when it shifts gears specially when it changes from 4th to 5th. This was not noticeable each time it shifts up, but only sometimes. At some point on an incline I pushed the accelerator and it just lost all power and the engine light on. I continued driving as I was over 250km away from home.
I took the car to a friend who runs a workshop. His diagnostic tool gave a message ‘component Y3/n84 (Full integrated transmission control VGS control unit defective.

By: Mercedes Medic

Mercedes Medic — Mon, 25 Sep 2017 15:25:29 +0000

In reply to Chamo. Fill via the dipstick tube. Only add half a litter at a time and check the level. You don't want to overfill the transmission.

By: Chamo

Chamo — Sun, 24 Sep 2017 12:12:18 +0000

Hi,

Help me to locate the automatic transmission fluid cap on a CLS 500, 2005 MODEL. Where do I put ATF? I only see the dip stick tube…..

By: Andy

Andy — Fri, 21 Oct 2016 17:46:50 +0000

I bought a used ’06 Mercedes ML350 about 3 weeks ago and knew it needed a differential rebuild and a wheel bearing.

In addition to those two I twice found myself coming to a stoplight only to be in neutral when I started again.

First time it went into high revs and moved very little, what I think is limp mode, but there was no check engine light and the mechanic did not see any codes. I pulled over, turned off car and after a few minutes started again and no problem until the second time 2 weeks later.

Second time I was coming to a stop there was somewhat of a “clunk” sound as I decelerated. No check engine light. When light turned green I had no power. Turned on and off and away I went and no problems to this time, but car has been in shop for diff and wheel bearing.

There is no transmission noise (i.e. whining) other than the one occasion with the clunk. There are no codes.

Will a bad wheel bearing cause this?

How to diagnose without a code?

One person I spoke with suggests it may be the transmission pump going bad but I would think it would cause a noise, right?

I am trying to stay away from the dealer and stick with independent mechanics and would love to hear how to figure this out, and if anyone has any sleuthing tips and tricks.

Thanks and I hope to hear from you soon.

Andy