Gearbox Issue

[Khalid123]

hi wanted some help ,
I have a a class 220cdi 2013 w176 shape , 7g automatic gearbox I believe 724.0

I have an issue with the car , whilst driving it lost power , when I pulled over the car would no engage any gear , also on first attempt of putting in gear a loud sound could be heard from gearbox area.
This sound also was made when the car was started initially and the engine sounded rough
vehicle was recovered by r.a.c they read the fault codes and initially only one code came up

was
p0715

After being towed back and whilst attempting to get the car in my drive the vehicle would no longer engage park or neutral or reverse , and keep going back into park , engine management light came on and the noise was no longer made whilst putting car into gear.

fast forward to today and x 2 additional codes are coming up

p0921 & p0925 along.with p0715 all showing up as permanent.

I understand p0715 correlates to the speed sensors which are located on the T.C.U , however I have been told the other 2 seem to be clutch or fluid related ,

has anybody had a similar instance any help of advice would be appreciated ,

I have contacted a few local garages who seem to be giving diffrent advices , as the car does not drive I am trying to narrow down what the issue could be to take to appropriate garage .

thank you

 

[AMGeed]

In your position I'd get the car recovered to Wayne Gates in Harrow where he can diagnose and fix your issue.
I wouldn't take the car anywhere other than a Mercedes specialist.

Wayne Gates Specializing in Mercedes-Benz Servicing & Repairs

The Independent Merc Specialist you can trust. Based in Harrow, Middlesex servicing the surrounding areas and Hertfordshire. Call now to book

www.mercservicing.co.uk

 

[Khalid123]

Thanks for the suggestion I have contacted him , I just wanted it out on a forum to see if anyone had experienced something similar to get a heads up . A gearbox specialist recommended pulling out the starter motor to see if metal shavings were on the inside , where it meets the gearbox , there were quite a few , so been told its most likely a flywheel , I'll update thread once hopefully repaired to help someone in future if they suffer same issue

 

[Oleks1992]

Thanks for the suggestion I have contacted him , I just wanted it out on a forum to see if anyone had experienced something similar to get a heads up . A gearbox specialist recommended pulling out the starter motor to see if metal shavings were on the inside , where it meets the gearbox , there were quite a few , so been told its most likely a flywheel , I'll update thread once hopefully repaired to help someone in future if they suffer same issue

Yes flywheels are very common to fail and more than likely you'll need a dual clutch unit too

 

[keith of kent]

The OP said the car was an auto

 

[Larkone]

Yes flywheels are very common to fail and more than likely you'll need a dual clutch unit too

I have a a class 220cdi 2013 w176 shape , 7g automatic gearbox I believe 724.0

 

[Oleks1992]

I have a a class 220cdi 2013 w176 shape , 7g automatic gearbox I believe 724.0

Yes that's correct, it still has dual mass flywheel and your gearbox is dct-7g which is dual clutch. This differs from conventional 722.9 that's on other mercedes models... I've done loads of these during my time with Mercedes

 

[Oleks1992]

The OP said the car was an auto

Yes it's an auto but it's a dct gearbox... Read below

 

[Encoel]

Thanks for the suggestion I have contacted him , I just wanted it out on a forum to see if anyone had experienced something similar to get a heads up . A gearbox specialist recommended pulling out the starter motor to see if metal shavings were on the inside , where it meets the gearbox , there were quite a few , so been told its most likely a flywheel , I'll update thread once hopefully repaired to help someone in future if they suffer same issue

Hi, did you ever sort this issue ? Kind regards

 

[BlackC55]

It will probably be caused by the double clutch failing. Remove the starter motor and see if there are any filings. If there are any then the DC needs replacing. Its a few quid too....