I have a 2001 x5 3.0d
The gearbox went in to trans failsafe mode.
Codes in the ecu 52 gear monitoring 2 car taken to gearbox specialist for rebuild
Picked up car gearbox failed within 20 miles fail safe again.
Car returned to garage they replaced the gearbox ? Delivered the car back to me I took it for a quick test this time one mile it failed again.
Slow to go into gear forward or reverse then trans fail safe.
The garage said the intercooler is the problem causing the gearbox fault.
Could anyone help as I can't see the connection between gearbox and intercooler.