hi,everyone, my car is w204 c220cdi. the automatic box tends to change up late and the manual change

[9474harry]

can anyone tell me why my cars auto box changes up late,and the manual change is slow to respond.can the tcu be adjusted. the car is w204 2007 c220cdi.

 

[DSM10000]

Is this when the engine is cold or all of the time? Also, what is the ATF level and when was it last changed?

 

[Deleted member 6183]

Older autoboxes are a bit dim-witted.

 

[Yugguy]

Not that dimwitted - in S my 5G is pretty sharp.

If the ATF has never been changed that would be my first step.

Check the dipstick plug, if black it is unlikely it has been changed. If red it may well have been but it's good to change it every 40k or so.

 

[Chrishazle]

My local indie, German car specialist, told me the ATF in my 2008 C220 S204 did not need changing until 100k miles, so he'll be doing it next January at her next annual service.

 

[Yugguy]

He told you wrong. 5G should have been changed at 37k.

 

[AltonAnt]

Do these gearboxes 'learn' your driving patterns over time? I saw a reset procedure somewhere...

722.6 Autobox Reset Procedure.

 

[Deleted member 6183]

Not that dimwitted - in S my 5G is pretty sharp.

If the ATF has never been changed that would be my first step.

Check the dipstick plug, if black it is unlikely it has been changed. If red it may well have been but it's good to change it every 40k or so.

I guess that it depends on what you are comparing it to, the OP may have had a more sophisticated set up in his previous car or, even, be used to driving a manual.

 

[Yugguy]

Do these gearboxes 'learn' your driving patterns over time? I saw a reset procedure somewhere...

722.6 Autobox Reset Procedure.

If you change your style it will relearn over a certain number of gear changes. The reset just sets back to factory change points, after which it adapts again.

 

[markjay]

He told you wrong. 5G should have been changed at 37k.

^^^^^^^^^^
As above

 

[markjay]

- Check the ATF level, check for ATF leaks e.g. from the pilot bush

- Change the ATF and filter

- Use MB STAR to scan the car for fault codes

- Use MB STAR to update the TCU software

(This is as much as you can do before resorting to more dramatic and financially-painfull measures...)

 

[Chrishazle]

He told you wrong. 5G should have been changed at 37k.

When I bought the car from MB Ashford Approved Used, 2nd owner of a car they'd supplied new almost 4 years earlier, done all the servicing and taken it in PX when the first owner wanted a new car, I noticed in the owners manual that an ATF/filter change should be done at 37.5k miles, and according to the servicing invoices that the salesman gave me, had not been done even though the car mileage was well above 37.5k. I had a big and heated discussion with the salesman and then the servicing manager of MB Ashford about this, especially as pre delivery and at their cost they were doing the 4 year B service needed 3 months later. The service manager was adamant that the 37.5k mile ATF change was for the 7 speed box only, and that the 5 speed box was sealed for life - and if I wanted the ATF/filter changed it would be at my cost.

My previous S203 C270 also had the 5 speed box, and there are any number of posts/threads on here and t'other side about "sealed for life" according to MB but members recommending ATF/filter change, often recommending at about 70k miles although some vary either side of this figure.

The indie I now use for servicing the car is very knowledgeable about MB's and German cars - Audi, BMW, Porsche as well as MB. i respect his knowledge, so will follow his advice and have the ATF changed at +/_100k miles in January next year.

 

[Yugguy]

My 5g in my W204 had the ATF done at 38k by the dealer. Personally I would change any ATF every 40k or so. Just had mine done again at 76k.