Specialist rebuild of the ATC400 transfer case fitted to BMW X3 xDrive — worn clutch pack, actuator gears and bearings replaced, tested, and refilled with high-grade fluid.
We confirm the exact transfer case variant fitted to your specific model year from your VIN before quoting.
The most common symptom — worn multi-plate clutch pack losing grip under load.
Rises with road speed rather than engine revs — points to internal gear, chain or bearing wear.
Triggered when the transfer case control module detects a fault in the clutch actuation.
BMW lists the transfer case fluid as lifetime-fill, but it degrades in practice — the leading cause of early clutch pack wear.
Send your 17-digit VIN and symptoms — we confirm the exact ATC400 variant fitted to your car.
We supply an already reconditioned, bench-tested unit on exchange — your old unit becomes the core, refundable £250 deposit applies.
Fit it yourself, or we fit it at our Coventry workshop. Every unit is covered by a 12-month warranty.
The ATC400 is fitted to BMW X3 xDrive models. We confirm the exact variant fitted to your car from your VIN.
Shudder under acceleration or on full lock, a clicking or grinding noise that rises with road speed, and 4x4 or ABS warning lights are the most common early signs.
No — we quote from your 17-digit VIN, which confirms the exact unit and specification fitted to your car.
We can't decode a unit from a registration number alone — have your 17-digit VIN ready (V5C, dashboard or door frame).