Specialist repair and reinforcement of xDrive transfer cases — worn clutch packs, actuator gears and bearings replaced, tested, and refilled with high-grade fluid.
Electronically controlled multi-plate transfer cases — full ATC-series rebuild and reinforcement.
Transfer case repair, plus rear differential work on A / B / CLA / GLA models.
All-wheel-drive transfer units for Cayenne, Macan and Panamera.
quattro drivetrain transfer components — diagnosis, repair and rebuild.
Q4 all-wheel-drive transfer case service and clutch-pack renewal.
ALL4 all-wheel-drive transfer units — worn clutches and actuators replaced.
Q4 all-wheel-drive system repair and reinforcement.
Transfer case diagnosis and rebuild for all-wheel-drive models.
Not sure which system your car uses? Send us your 17-digit VIN and we'll confirm the exact transfer case and the right fix.
The most common early symptom of worn clutch packs inside the transfer case.
Often points to actuator gear wear or a failing internal bearing.
These can be triggered together when the transfer case control system detects a fault.
A sign of significant clutch pack failure that needs addressing before it worsens.
From the outside a failing transfer case looks fine — the damage only shows once it's stripped. These are the exact kinds of wear we look for and rebuild out.
Send us your 17-digit VIN (found on the V5C, dashboard or door frame) along with the symptoms — we'll confirm the exact unit and likely fault.
Worn clutches replaced with high-performance friction plates, plus upgraded actuator gears and heavy-duty bearings.
Unit tested, pre-filled with high-grade xDrive fluid, covered by a 12-month warranty.
Look through the glass on the driver's side — a small metal plate sits at the base of the windscreen.
Open the driver's door — a sticker on the frame or pillar lists the VIN along with tyre and paint codes.
Printed near the top of your V5C registration certificate, labelled "VIN/Chassis number".
Many compact 4MATIC Mercedes models drive the rear axle through a compact, electronically-controlled rear differential unit. When it wears you get the same 4×4 warning lights and drivetrain shudder as a failing transfer case — but the fix is a different unit.
We rebuild these rear differential / rear-axle drive units too, so you don't have to buy a full replacement:
No — the same model can use several different transfer cases and gear ratios. We quote from your 17-digit VIN, which pins down the exact unit and the right parts.
Typical turnaround is a few working days once your unit reaches us. We'll confirm timing when we see the VIN and the fault.
You can send us the removed unit, or ask about removal and refit — message us your location and we'll advise the best option.
Every rebuilt transfer case and rear differential is bench-tested and covered by a 12-month warranty.
BMW xDrive, Mercedes 4MATIC, Porsche, Audi quattro, Maserati Q4, MINI ALL4, Alfa Romeo Q4 and Land Rover AWD systems.
Send your 17-digit VIN and describe what you're feeling — we'll come back with an honest diagnosis and a quote. We can't decode a unit from a registration number alone, so please have your VIN ready (V5C, dashboard or door frame).