Reverse not engaging in BW35 Autobox

[Billy Smalls]

What a joyful morning I’ve had.

144 DL Auto with the BW35 box (correctly filled with recent fluid) parked up overnight – got in this morning, no reverse.

Specifically – drive, lowgear, park, neutral – all doing what they should. Goes up and down smoothly through the gears in drive. But reverse is just nothing – as though it’s in neutral. No weird noises, no clue!!

It did have some work to the exhaust downpipe last week, so I did consider the linkage has been knocked but I’ve reversed fine in the car for the last 5 days…

It’s in the garage as they loan me a car which is essential – but I’m asking here, so I can pass any info on to the mechanics and also brace myself for the possibility of an effing HUGE bill….just after spending £350 getting it through and MOT and Xmas in 2 weeks….

Weep

So, does anyone recognise this symptom?

Thanks