Hi,

Any guidance for the electronic system repair/replace for Merc B180 2009 model giving error about transmission. One mechanic says, gearbox is fine, it's electronic issue, could cost less than 5k ? Is it too high ? Where can I find the price of such system and can it be repaired for lesser cost ? Error message attached. When I drive, seems like gears aren't changing, it stays on gear 1, engine can start, can drive as well, but car is slow to move as if brakes on. After one day, error disappears, but after driving for a while, it re-appears and slows down the car. Error: "Transmission Consult workshop"

Thanks.


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What does obd say

Thanks for your reply. Not sure what's OBD ?

This is something abit technical for you.
OBD is a diagnostic port usually underbeath the dashboard whereby you plug in and read the error codes.

Check this link to know the location of the port:
https://www.outilsobdfacile.com/location-pl...d/Mercedes-B180

And you will need a Bluetooth ELM 427 obd adapter, easy to find in Shopee.
And Torque App from Play Store.

https://forums.mercedesclub.org.uk/index.ph...-please.118418/

Thanks for the details. Let me check and buy that.

old merc very famous for ECU/TCU failure after certain time & mileage. My mechanic also just did a W211 E-Class not long ago.. Gearbox TCU sent for repair job, luckily can be fix without needing to buy new or 2nd hand TCU to replace.

Ah nice, so it can be repaired as well. Mechanic is asking 3000 recon TCU (i believe that's what he said) and coding 800 and oil 400 and service 4600. Not sure all of that is required. Other shop asks for 3200 for the same (no oil or coding charges).

coding fee may help u scan thru other value before worse happen

oil also good for improve gb lifespan.
if u not plan to keep long. then go 3200 shop

Thanks for your advice. Coding is some kind of service ? And cost 800 so high..

code/ program using specialize scan tool. earlier car use star (sds) later car use xentry.

to match the old and new tcu due to different country region. basic thing also reset previous memory. driver adaption etc..

these can be done but not compulsary thing. we not sure the shop kungfu and ur car overall condition, odo km mileage

one thing i proud of benz is. he wont cause u helplessly stop by road side stranded only wait tow car
still can drive until really go Visit Workshop (another brand jokes)

Alright, I understand. Thanks. Overall car condition is very good. 100k run.

Not an bensi owner, but hang out alot in workshop that deals with german brands repair. TCU replacement is actually the least of your worry.

What you should do is ask the mechanic to REALLY check if the wiring harness of TCU is shorting anywhere. There is/are reason(s) why the TCU was reporting fault codes when the transmission seems fine. In most instances I have seen, the small wires in the wire loom have compromised insulation along the way.

Thanks, appreciate your advise I'll ask the mechanic to check that too.

Dishonest mechanic will say it was the ecu and charge big buck for it.

I'm not sure what was the problem and how to check. But mechanic fixed it, saying they replaced the faulty transmission module for 3350 for 6 months warranty..

Did you keep the old "faulty" TCU? if yes, can try send it to someone who knows how to repair ECU/TCU to try repair it. You can call Ang zero-12-2zero3 zero1zero2.

ALT Car Services

It didn't come to my mind. No, I didn't ask for the old one. I should have asked..

Just drive and observe. Hope it was a genuine fix.

Alright, Thanks