Auto gearbox temperature sensor

[merc300e]

I have a C200 auto/tip 2000 w-reg older model. The gearbox has been playing up. From cold start if put in drive (D) it stays in 1st gear. ( dash indicator shows (N) ). Lever will not move back to park without turning off engine and restarting. After a minutes driving if restarted all works ok. I have read the trouble codes which state ' gearbox temperature sensor' Where is this? Is it easily changed? Thanks.

 

[Cole@MBS]

If its in drive and the dash is showing N, then i would guess that the selector lever is the fault!!! i would think that the fault codes you have are a ghost code!

 

[Ellsy Tanners]

It is part of the electrics kit or conductor plate as it is called.

 

[television]

2 parts to this, the shift rod and the electronic selector lever module

 

[merc300e]

Gearbox problem more info.

Thanks for that, what is strange is that the fault completely goes away after about 100 yards of driving if I stop/restart engine. To give fuller details: car starts ok - lever moves to drive (D) - heavy clunk as it takes up drive - car now only drives in 1st gear - dash shows N - lever will not go back to park - stop car -switch off - lever goes back to park - start car - all is well dash shows D. Fault codes: 116-transmission oil temperature sensor or starting lock defective or inoperative. 130 CAN communication to engine CU or Comm. to EWM CU. ( via CAN ) signal inprobable. 135 CAN communication to engine control unit fault in CAN communication. No of errors = 3. I removed these codes but no change. Does this help? Thanks.

 

[television]

I had the same fault on my 129-1999 it would only do it sometimes, and the key start cured it,,I think that by setting up the shift rod may be a place to start looking, though I do feel that it still may be the selector, there have been a few post on this, but I cant recall a definite fix being posted.

Its worth doing a search on the forum " gear shift locking up"

 

[Pingy]

Hi Julian,

I know it's a while ago but can you remember how you fixed this fault, I have exactly the same problem on my E220 CDI?

Thanks

Paul

 

[rich.g.williams]

might be an idea for you to describe the problem you are having and any error codes that have been read, I suspect that Mr Goodman will be well able to remember the cost of repairing the fault described!

 

[Pingy]

E220 2001 Auto probelm

I have a problem which only occurs when the car is cold, when in drive it remains in 1st gear, additionally the lever will not return passed neutral unless I turn off the ignition. Unfortunately I can’t read the gear display because segments are missing! If I drive for 2-3 minutes turn off and on all is fine. This appears to be the same fault as Julian Goodman experienced with his C200.

Any ideas would be much appreciated

 

[rich.g.williams]

do you have a floor shift which has P R N D 4 3 2 1 or do you have an electronic selector lever P R N D Tiptronic?

If its the floor shift what happens if you manually select 4 3 2 1 do the gears change appropriately?

did you get any error codes read?

 

[Xtractorfan]

I wonder is this model prone to the oil contamination in the autobox ECU.. this can cause the limp mode and the selector problems.. worth a check..

 

[dieselman]

I'd go for either a selector unit problem, which is common, or worn engine mounts, which is less common.

 

[television]

Also on cars 1998 to 2001 can have poor connections on the gearbox ECU these are the CAN wires on their own at the end of the plug,,non drying switch cleaner can help on the connectors

 

[Pingy]

Hi Rich,

Mine has the tiptronic box, I've not had the code read yet as I'm out in France and daren't let them get their hands on it!

Thanks

Paul

 

[rich.g.williams]

additionally the lever will not return passed neutral unless I turn off the ignition

pingy this is a good clue, maybe the gear level (ESL) could cause this or the interlock cable to the ESL

the ESL has a controller board that works the interlock

it is also possible that there is something wrong with the shift valve in the transmission or its mechanical linkage to the ESL

it is also possible that the temperature sensor/reed switch in the transmission is faulty - the transmission computer uses the reed switch to confirm position of the shift valve

when the car is cold, when in drive it remains in 1st gear

you will find that it is most likely remaining in 2nd gear and is in transmission limp mode - the transmission computer finds a fault and does this

I would be looking at the ESL and also the Electroplate in the transmission

have a good read of other transmission posts on here I'm assuming yours is the 722.6xx five speed auto tiptronic

having the codes read will probably tell you what the fault is

 

[Pingy]

Thanks very much for all the ideas, I just need to wait for better weather now, I don't like laying in the snow!!