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Yes, I am confused on the wiring, some said they wired SZL-pin12 to Pin10 of the black connector in the engine bay which is then connected to Pin4 of TCU while SZL-Pin13 is connected to chassis ground which is not what I see from the wiring diagrams.
Hmmm... And where are going that 4,5 wires from TCU to engine control unit and relay box, and thats it? Hmmm... How about GWS ? I think about two posible options, pin 4,5 wires from TCU goes to relay/ ecu box under hood, and from there goes to GWS. Second option, GWS sends signal to TCU via PT- CAN, but in second option doesnt makes sense what 4,5 pin wires are doing in relay/ecu box.
Lets try to look at wirings on TIS.
The first picture in post #957 above is the wiring diagram, it shows only 3 connectors involved, the SZL connector, then the connector in the ECU and relay box in the engine bay and the mechatronics connector. It shows 2 wires going all the way unlike what others are saying by grounding one wire at SZL.
If i will do this mod in a future, i will connect wirings like newtis shows. Ground one of pins, not makes sense for me. When you activate paddle it should send singnal to EGS, if you connect it to ground, i dont think that it will do that.
If i will do this mod in a future, i will connect wirings like newtis shows. Ground one of pins, not makes sense for me. When you activate paddle it should send singnal to EGS, if you connect it to ground, i dont think that it will do that.
That is exactly what I thought, follow newtis, but then read many posts on this very thread about people grounding pin 13 of SZL.
Well, will check if the wires are already there from the engine bay box to TCU. Depending on that will proceed with best course of action that takes minimum effort.
Here are some pictures of the 12pin black connector inside the DME and relay box in the engine bay
The top connector that you unplug has empty 10, 11 pins while its mate has wires populated fully with brown (GND?????) on 10 and White/Blue on 11. These two wires doesn't match the color code shown in TIS.
Since there are already wires on 10,11 on one end of the connector, will run a pair from SZL to here and see what happens, of course after programming though.
Can someone remind what all modules need to be default programmed with new VO $2TB replacing $205 ??? SZL, EGS and ??? I only added heated steering wheel with push/pull paddles with leather inserts, haven't replaced the gear selector module and is still the stock one that came with 6HP transmission that came standard on all E61s in US
Should be ok to code just EGS and SZL with new option in VO i think. You add just switches not module, so its should be fine. If it will not work, you can try write new VO in CAS and LM, code them.
Your GWS is fine, its yust like switch block, that commands EGS.
You can even run sports transmission software.
Ok, I got the connector in the engine bay ECU box, scavenged from an E60 with 2TB option (someone already took the steering wheel and shifter handle and cover, but not the module).
There are two wires in 10,11 pins with the wires of exact color code shown in TIS. I am still unsure how people are getting the paddles to work by grounding Pin13 or SZL and running only 1 wire to this box unless I am overlooking something else in those posts,
Coming to my next question. What is the main difference between 205 and 2TB shifter modules shift levers only. The modules must be different, but I dont see any difference between the lever and its buttons other than being different design while 2TB lever looks better than 205 one and there is that seperate Sport button on 2TB?
10-19-2022, 01:29 PM
