Transmission range sensor - code for part? where to order?

[MikiSpaga]

Good morning,

I find myself in a bit of a tricky situation.
The check engine has appeared. Did a summary check and found that the "Transmission Range Sensor PRND" is not working right.
I can`t seem to find the part on line.

Can anyone give me any suggestion on how to search for this sensor? I might be saying something generic and not the exact name of it.
It doesn`t really show me anything from MB under that definition.

2011, C250 blue eff, diesel, 2.1 204 bhp automatic

 

[Petrol Pete]

722.9 transmission range sensor - Search Videos

www.bing.com

Something like this ?

 

[MikiSpaga]

722.9 transmission range sensor - Search Videos

www.bing.com

Something like this ?

I am not sure to be honest. that is the first reference I saw to it tbh. It might be but I`ll need to google a bit more now.
Thanks for the reply. Got me moving a bit

 

[MikiSpaga]

Can this repair be done in a DIY mode? does it need taking the gearbox apart? bleeding the transmission oil again?

 

[Petrol Pete]

Mercedes – 722.9 7G-Tronic Valve Body & Conductor Plate – Must Read – MB Medic

www.mercedesmedic.com

Go down this route and have a mooch about online. The gearbox is a common item and spares/repairs/services are available . I don't know the 'ins and outs' of it but I believe if you get your original one repaired it bolts back in no problem . If you buy a new / refurbed one it has to be coded. Someone on here will be along soon with more detail

 

[Petrol Pete]

Everything of note is inside the box , pan off, replace fluid and gasket job.

 

[MikiSpaga]

Forgot to mention, before this I kept seeing an error about P2783 - torque converter temp too high. Not sure it can be related to the P0705

 

[Petrol Pete]

How many miles on this car and what gearbox service history does it have ?

 

[MikiSpaga]

How many miles on this car and what gearbox service history does it have ?

130k, just passed. I bought it at 120k, full service history prior to me. but no gb work done. I changed the oil, filter and sensor (if I remember the invoice exactly) at the dealership.

 

[Petrol Pete]

OK Miki . Just to confirm you have no history at all of a gearbox service ? If that is the case the gearbox needs a full service.

 

[MikiSpaga]

OK Miki . Just to confirm you have no history at all of a gearbox service ? If that is the case the gearbox needs a full service.

Yes, there appears to be no service work done on the GB. nothing registered at least.
All I did is change the oil/filter and the sensor.

What would the service consist of?

 

[MikiSpaga]

am I wrong in assuming I need to change this whole part also?

 

[Petrol Pete]

https://www.weistec.com/forms/weistec7229servicedata.pdf#:~:text=Service%20Information%3A%20Additional%20adaptation%20counter%20indicator%20Transmission%20722.9,relates%20to%20the%20adaptation%20counter%20for%20gear%20adaptation.

 

[Petrol Pete]

Mercedes-Benz 722.9 Conductor Plate TCM Failure Overview and Solution

Click to see our Mercedes-Benz 722.9 Conductor Plate TCM repair overview and solution including videos for Mercedes-Benz model years, 2004 and newer.

circuitboardmedics.com

Mercedes Benz 7G Tronic 722.9 Gearbox TCU renew cable test harness

Mercedes Benz 7G Tronic 722.9 Gearbox TCU renew cable test harness, Applied to renew the Mercedes Benz 722.9 gearbox TCU control unit.

www.u-obd.com

 

[MikiSpaga]

Mercedes-Benz 722.9 Conductor Plate TCM Failure Overview and Solution

Click to see our Mercedes-Benz 722.9 Conductor Plate TCM repair overview and solution including videos for Mercedes-Benz model years, 2004 and newer.

circuitboardmedics.com

Mercedes Benz 7G Tronic 722.9 Gearbox TCU renew cable test harness

Mercedes Benz 7G Tronic 722.9 Gearbox TCU renew cable test harness, Applied to renew the Mercedes Benz 722.9 gearbox TCU control unit.

www.u-obd.com

thank you very much Pete!