EGS & TRS ZF6HP26

[Mistermorgan]

I am am hoping someone could help me understand what is possible with my EGS & Transmission range sensor on my x5 4.8is

I have a ZF6HP26 box on the car, I have had some intermittent issues with a complete non-start, not cranking nothing, It will also throw up an EGS signal line disturbed error code as well as speed with the non start. I have determined it is likely an issue with the TRS, it feels like the car doesn't know its in neutral/park and blocks the start.

I recently serviced the transmission and when I took out the valve body there was a good coating of metallic paste around the transmission switch slider which I cleaned but the issue persists. The TRS is integrated into the EGS which in turn is integrated into the valve body on this transmission.

Q1 - Can these electronic components actually be rebuilt, I have seen you can buy the PCB for the range switch online bit not found any guidance on how the switch is rebuilt then re-sealed to sit in the oil pan again
Q2 - if I need to replace the EGS and range switch as a whole, can this actually be done, again I've seen the whole mechatronic unit available to purchase but a local transmission shop told me its not possible as a donor unit cant be coded so would need a whole new valve body & Mechatronic unit from ZF. - this doesn't sound right to me. There is a tesla in orbit, anything is possible right
Q3 - Failing all of this, is there a coding option to bypass the neutral safety switch - I would be keen on doing this as a temporary solution to actually confirm its the TRS that's causing the issue.


As llways thanks for any guidance on this