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G300 Professional- Gearbox Control Unit

Joined
Oct 26, 2015
Messages
20
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Age
42
Location
Pretoria
#1
Hi, Anybody know of a 2nd gearbox control unit on a 2012 professional:
> A 001 545 21 16

Apparently no other merc model are running on this, and very expensive from dealers.
After numerous tests, we came to the conclusion, that this was the problem why the gears won't shift and stick in 1st gear.

Any info will help.

Regards.
Francois Liebenberg.
 
Joined
Oct 26, 2015
Messages
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Age
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Location
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#4
Cannot find that part no on EPC. Is this not the part
Hi Pete I't doesn't look like it, will attached a foto. I got hold of a guy in Honeydew called Jaques I think SF motors, that said he want to have a look at it, before I change the unit.
It is the Professional that belonged to Frik, don't want to shift from 1 onwards, reverse, parking etc working.
 

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Pete460332

Staff member
G-Wagen Club SA
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#5
Its looks to me that the hardware is A003 446 4010 ( which is used on many different models ) , the software is A003 448 2110 and the completed assembly ( hardware and software ) is A001 545 2116. The software and the complete assembly are not on EPC which Means you cannot walk into the parts store and order it . I suspect what happens is they order the hardware and the workshop on installation will flash the correct firmware and they put a new sticker on the complete unit. Perhaps you can ask the workshop to reflash the firmware - if it does not flash then they can confirm its faulty
 

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Joined
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#7
Thank you very much for info, if We need to replace the unit, it will make a big difference to order from these guys. The guys working on the problem said it's a combination of about 3 different model that they incorporated into this unit.
Regards.
 
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#9
That makes no sense - Who is working on it ?
It was Robbie from ATR in Pretoria, he mainly do work on Gearboxes, and we had another specialist in, currently working at one of the dealers, to come help us out and double check wiring etc. That was the feedback I got. Vehicle now on its way to JF Auto in honeydew for 2nd opinion.
 

Pete460332

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G-Wagen Club SA
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#10
It was Robbie from ATR in Pretoria, he mainly do work on Gearboxes, and we had another specialist in, currently working at one of the dealers, to come help us out and double check wiring etc. That was the feedback I got. Vehicle now on its way to JF Auto in honeydew for 2nd opinion.
HAve you been to mercedes yet ? They should be able to check the fault codes etc
 
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#11
HAve you been to mercedes yet ? They should be able to check the fault codes etc
All these guys working on the same computers, the main problem were that the computer sometimes pick-up the box and sometimes it doesn't. We already replaced the electroplate and solonoids inside the gearbox,as per the working manual on fault reporting, after that was donethe problem started with picking-up the control unit on the computer.
 

Pete460332

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#12
Do any of them have the ability to reflash the control unit? As I said the hardware is common to many Mercs , its just the software that differs from model to model. So you might be able to get a second hand one off another car but you will need to change the software
 

Alan

G-Wagen Club SA
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#13
There was another thread about gearbox specialist in Alberton.
Just heard today from a colleague who had his 350ML there that he now has a CVT it changes so smooth. That makes three out of three so far that are ecstatic about the results and service.
 
Joined
Sep 12, 2016
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Durban
#15
Hi, Anybody know of a 2nd gearbox control unit on a 2012 professional:
> A 001 545 21 16

Apparently no other merc model are running on this, and very expensive from dealers.
After numerous tests, we came to the conclusion, that this was the problem why the gears won't shift and stick in 1st gear.

Any info will help.

Regards.
Francois Liebenberg.
Hi Francois,

Did you come right with the control unit? Pm me as I have a spare.
 
Joined
Oct 26, 2015
Messages
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Age
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Location
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#17
Hi, Anyone in Pretoria or JHB area that are driving a G300 Professional, I would realy apreciate if we can copy your software from gearbox control unit, we are still batteling to get my control unit acting as should be. Almost had a 2nd hand one from E-Bay, but some-one else got it first. desperate times, call for desperate measures.

Thanks.