The pressure accumulator inside the box is used for the START-STOP function.
The TCU has it hooked up and can control it but has no practical use for it. Well, for example why would there be a Start-Stop in a drift car?
Rather, no one who needs a TCU needs Start-Stop and this pressure accumulator has no other use
Emergency Neutral
Re: Emergency Neutral
You right, no one need start/stop, but some one need neutral when engine stopped for moving car by hands for exampleJar wrote: 18 Apr 2023, 09:37 Rather, no one who needs a TCU needs Start-Stop and this pressure accumulator has no other use

@E60 525d LCI stage3 turbosystems + 8hp75 RWD turbolamik
Re: Emergency Neutral
This is not complicated.
The gearbox has a manual park release / "neutral lever" on the left hand side, near the cooler ports.
Attach a cable, route cable to somewhere convenient, pull for neutral,
Re: Emergency Neutral
you can always just remove the locking paw and use your handbrake like a manual