The TCCU reads the reverse sensor in combination with other things to interpit what you want it to do.
It's concievable that when you trigger the reverse light, the TCCU actuates a solenoid in the valve body that may be actuating a brake, or trying to move a clutch around.
Causing it to act funny until it stops tring it to do that.
Then again I could be tottaly wrong & it's either in your head, or some other issue.
__________________
Toysrme257th - AIM about anything, anytime; including v6 turbos.
World's second ES 300/3vz-fe Turbo.
