[l-pagan]

do i need to reprogram my computer when i change the rear diff gearing.
installed new rear diff. with 307 gears from 282 gears, and now the trans goes into i lip mode and wont shift until i turn car off and restart, its ok for a little while and then back to lip mode and wont shift again..

thank you
luis
1999 E430

 

[Kajtek1]

that is pretty complicated issue and I think above the DIY forum level.
I had several experiences with W210 that they have lot of computer programs that were never disclosed to the consumer. Like how many owners know the engine will shut down with bad overheating?
I don't know what could be the loop in your case, but I can imagine the computer is comparing engine speed with wheel sensors speed and when it is not up to the program, it is assuming the car is spinning wheels.
Bottom line -that would be a job for an expert with Star Computer.

 

[Yacht Master]

Nightmare, I know of two attempts on E55 Kompressor cars to change ratio.
One went back to original ratio and added Qualif, and the other suffered for months. I'll see if I can find the thread.

 

[l-pagan]

thanks, i would really like to keep it but if i have to return to stock i will.

 

[Plutoe]

You have a major problem! Assuming that gear ratio is offered by the factory. Yes the engine and transmission control modules will need to be updated to reflect the gear change, however if the gear ratio was or is not offered by the factory you have a major problem.

You will need a dealer or someone with DAS Xentry with developer mode activated to do the investigation and updating. Very Good Luck!!

 

[Yacht Master]

thanks, i would really like to keep it but if i have to return to stock i will.

Found one of the last threads over on MBWorld that has good information on what the W211 guys had to do. You might want to try changes that can be done in star first cause maybe the W210 is different than a W211, then if you still have a problem, call Cory, he can do it but $$$$$

2.82 diff on the E55, help? - MBWorld.org Forums

 

[l-pagan]

the 3.07 rear came from a E320, would it help if i get the computer from the same car.

 

[Yacht Master]

the 3.07 rear came from a E320, would it help if i get the computer from the same car.

Good question, the ECU will not work 6 cyl vr 8cyl but I assume you are talking about the TCU, I don't know if it would be plug & play, or if you would need STAR to "marry" it to the car/ECU.

Have you downloaded the fault codes you have now?
You should have at least one if the car goes in to limp mode.

 

[l-pagan]

the code is P0700 trans controler

 

[Yacht Master]

the code is P0700 trans controler

OBDII Code P0700 MERCEDES-BENZ - Transmission Control System Malfunction | Engine-Codes.com

I would call Cory at Kleenman in Colorado Springs before I swap TCU's.

 

[Plutoe]

The engine, transmission and differential are all matched with the ECU and TCU. Neither will work if going from 6 to 8 cylinders or the reverse.

Look at the transmission number of where the differential came from and does it match yours??

Like I have said if the differential ratio was never offered within your models engine and transmission, I do not see how it will work!!

 

[l-pagan]

i put the stock rear back in. until i find a fix. but i really would like the 3.07 gearing.

 

[Plutoe]

Now all you have to do is clear the transmission codes and you are off and running!!

 

[enrikerace]

Sorry for bringing this thread back to life,

did you managed to fix your problem? im lloking to swap my differential too on a e320 w210 1999.

THANKS!

 

[brooktre]

I just swapped the differential on my 01 4matic wagon. In this case it was like for like (3.07) ratio and I've had no issues. If you search for recent threads under my user ID there is a printout of various differentials and what models they were installed in.

 

[e320tony]

I just swapped the differential on my 01 4matic wagon. In this case it was like for like (3.07) ratio and I've had no issues. If you search for recent threads under my user ID there is a printout of various differentials and what models they were installed in.

Sorry to bring up an old thread but with my case, if I'm pulling out my E320's 3.07 differential and installing an E430 2.82 differential, does this means it will work without having to reprogram the TCU? Both differentials are from a W210.

 

[Mackhack]

Sorry to bring up an old thread but with my case, if I'm pulling out my E320's 3.07 differential and installing an E430 2.82 differential, does this means it will work without having to reprogram the TCU? Both differentials are from a W210.

Needs to be changed. I can help you if you still need help.

 

[Deplore]

TCM needs to be recoded for the new diff. 99 is EGS51, so it's a little problematic.