2013 C207 Gearbox Service questions

[karllap]

Hi, Couple of questions. I am having some issues with my car in regards to I sometimes feel a bit of jerk then after that I can't manually select gears (on the trip tronic) and although the auto works it seems to hold on to gears to a higher rev than normal. As soon as I turn off then on again it works ok.

I only bough the car about a month ago and it has 95k miles, I don't have any information regarding a gearbox oil change so thought I should get that done.

Can anyone tell me if it is the 722.9 gearbox I have (2013 pre-facelift E220 coupe), any part numbers for the parts needed and what needs to be done as I have read change oil and filter, change oil in torque converter, etc

Lastly, a very good local garage says that he can do this for me but he isn't a Merc specialist. Is this something that can be done by a local garage (I do trust him and he has always served me well) or is it a specialist job and if so any idea of price?

Thanks

 

[AndrewOl]

I would try and find a good Indy MB garage for this as although it can be done without the MB diagnostic system it is better if the garage has this kit (STAR). Not sure on your model but you probably have the 7 speed auto. Don’t worry even if it not just needing a service it can be sorted.

 

[steveq]

Hi,
I suspect that you have the 7g gearbox.
You could tell for use by putting the gearbox into manual mode and changing the gear up to see if it goes into 6th on the dashboard and then goes into another higher gear (7th).

More technically, you could look at your car's datacard and it should have something like this:-
427 AUTOMATIC TRANSMISSION 7-SPEED

Assuming that you have a 7G, the next question is whether you have the 7G+ gearbox. That uses a different spec ATF so it is important when doing a service.
Again the datacard might help.
My datacard says:-
A62 FE TORQUE CONVERTER HOUSING 19
A66 FE CONVERTER 19 MM
My 2011 S212 has stop/start and the 7G+.

For all 7G gearboxes you need a filter, sump seal, new sump bolts (they are single use stretch bolts), sump bolt washer.
You also need an adaptor and pump to pump in the ATF through the sump drain bolt fitting.

The 7G needs ATF to spec 236.14 (red colour) while the 7G+ needs ATF to spec 236.15 (blue/green colour). They are not miscible.

If you are doing it yourself you will need a low range torque wrench as the sump bolts are tightened to something like 4Nm and then tightened a further 180deg.

You should get the Torque Converter drained while the job is being done. It will take about 9 litres of ATF.

 

[steveq]

Hi,
I suspect that you have the 7g gearbox.
You could tell for use by putting the gearbox into manual mode and changing the gear up to see if it goes into 6th on the dashboard and then goes into another higher gear (7th).

More technically, you could look at your car's datacard and it should have something like this:-
427 AUTOMATIC TRANSMISSION 7-SPEED

Assuming that you have a 7G, the next question is whether you have the 7G+ gearbox. That uses a different spec ATF so it is important when doing a service.
Again the datacard might help.
My datacard says:-
A62 FE TORQUE CONVERTER HOUSING 19
A66 FE CONVERTER 19 MM
My 2011 S212 has stop/start and the 7G+.

For all 7G gearboxes you need a filter, sump seal, new sump bolts (they are single use stretch bolts), sump bolt washer.
You also need an adaptor and pump to pump in the ATF through the sump drain bolt fitting.

The 7G needs ATF to spec 236.14 (red colour) while the 7G+ needs ATF to spec 236.15 (blue/green colour).

If you are doing it yourself you will need a low range torque wrench as the sump bolts are tightened to something like 4MN and then tightened a further 180deg.

You should get the Torque Converter drained while the job is being done. It will take about 9 litres of ATF.

 

[steveq]

Apologies for the double post -- Not sure how I managed to do that.

You will also need good, clean lint free cloths to clean up the sludge in the sump pan. Check it for any metal pieces -- could spell impending trouble.

You will also need a tool to measure the temp of the ATF during the filling stage. I used my ICarsoft i980 OBD II which shows the temp of the ATF. It would be possible to use an infra-red temp gauge trained on the transmission sump -- I suspect that would be rather inaccurate though.