NefMoto

hi Guys,

my control unit hanged again. I suspect water damage.

now I have to buy a new one. I have a good offer for a passat 3b 1.8t me7.5 with the part number: 4B0906018DH and bosch number: 0261207928 to get. I would also love to strike, but would it work at all? could I transfer a golf 4 / audi a3 me7.5 dump to this control unit and it would work or are they very different control units?

I have everything for the rest of the conversion from m3.8.3 to me7.5. only I have not found a golf 4 / audi a3 control unit which is comparatively good and cheap.

Iirc this one with different bootrom
Also they're not water proof

so it wouldn't work or would it work?

What is passat ECU number and software version?

Passat Ecu-number:4B0906018DH and Bosch-Number: 0261207928

DH have 6.02 boot version.  Most of A3 golf have 5.12.
Soo it can't work

aaa understand. and there is no way to change the boot version? is there a me7.5 from the audi a4 or passat that has the same boot version? As far as I know, the pin assignments are the same as for the A3.

Dude the bootrom is OTP. Yes there is a way to change it - replace the main processor with a new one!
For all intents and purposes NO.

Also, on transverse engine platform you NEED to get a waterproof sealed ECU, because it gets rain on it.
A 4B will never ever work, because it's not protected in any way, it won't fit the bracket and it is designed to be housed in a weatherproof box.

the control unit should enter a golf 3. Since I already have water damage, I decided to pack the control unit inside. therefore, this shouldn't cause any problems. The only thing according to your generous information would be the bootrom. if I can do that simply by swapping the main processor, it wouldn't be such a big problem.

such main processors do not cost the world now or do they?

It was the sarcasm
Go get transverse ecu

Currenty i tested last week CG passat ecu crossflashed from 2.0 N/A ALT on AMK engine cuz it was with ABT tune wokrs great , but they differ hardware one is not water resist (without sealant on edges) and it uses diferent case it will be hard to fit.  DH will not work i think it uses newer  processor if im not wrong.

Wait what , you flashed a NA tuned file on 1.8T me7.5 hardware? Did I understand that right lolz

As long as they have the same bootloader you can cross flash.
You should also move over the eeprom dump.
You can find the bootloader version with me7check.
I put an ECU from an A4 in my Golf, just added some black silicone around the edges to seal it. Works with no issues so far

Replacing and programming a such processor is strong three digits labor, the processors are probably discontinued. If not, the chip will cost more than an ECU.
What's your obsession with this?

A proper ECU is like 25-40€ on eBay.

No i got the ecu from NA ALT i think 2.0l 5v auto and flashed it with 1.8t CG and it works perfect. Now its mounted on 1.8t leon With AMK engine because it was with ABT tune.

Those ECU's are the same physically, same board, same bootrom.

are they missing any hardware? ive tried this a few times in the past and did not have n75, vvt and had a code for primary lambda senor heater

I've tried 2slow azj ecu with 1.8t file and got the same wbo2 heater dtc
Pcb slightly differs but n75 and all other was fine to me

there was one missing transistor i think but nothing reflected to n75  wideband etc. And just flashed it by obd no boot. and replaced eeprom content with immo off . Its used to tune and after this flash ready file to current ecu with immo .

Ah okay, that makes sense, I thought you flashed the alt file to use on 1.8t car lol. But yes the ALT uses the same physical hardware, however 1.8 na ecus dont , the alt is an exception.

And s6 c5 v8 uses same ecu as 2.7t allroad 4z7 c167 cpu. And passat w8 ecu is compatable with 4f 3.0 Bbj flash and 4.2 BAT  . If somebody needs this . Tested today :)