Remanufactured Automatic Gearbox Mechatronic Unit in OE Supplier

A remanufactured module: the mechatronic sleeve and valve body, which is the commonest automatic gearbox failure on these cars and is not a gearbox rebuild.

We are an independent parts supplier. We are not BMW AG or MINI, we are not appointed by them, and BMW and MINI are their trademarks. What we sell are parts that fit those cars, described as such. Every listing states the chassis codes and engine codes it fits, the production date range, which quality tier you are buying, the labour time the job actually takes, and whether the part needs coding to the car before it will work. Where a part is only made in plastic by the factory and fails because it is plastic, we say so and we offer the metal one.

Specification and fitment

• Fits: 1 Series E87 E88 F20, 3 Series E90 E91 E92 E93 F30 F31, 4 Series F32 F33 F36, 5 Series E60 F10, X1 E84, X3 E83 F25, X5 E70 F15, Mini R56 F56 R60 F60
• Engine: varies by module. The engine control units and fuel system parts are engine specific and the body modules are not. These cars change mid production, sometimes twice in a model year, and two cars built four months apart can take different parts. Send us the last seven digits of your VIN with the order and we check the part against the build record before anything is dispatched. It takes us two minutes and it is the difference between a part that fits and a return.
• Production dates: 2004 to 2019 depending on chassis
• Quality: made by the firm that supplies the vehicle manufacturer, in that firm's own box rather than a dealer box. Identical part, identical line, no dealer margin, and this is what we would fit ourselves
• Part number: cross referenced to the original equipment number for your VIN and confirmed before dispatch. We do not publish a single number against a listing that covers several build variants, because that is how people order the wrong part
• The failure this addresses: a module that has stopped responding on the bus, a permanent fault code that returns after clearing, or a car that lost a module during a flat battery or a badly done jump start. The footwell module in particular is notorious for exactly that
• Labour time: one to three hours for a body module, four to six for a steering rack or a mechatronic unit
• Coding: required. This part has to be coded to the vehicle with a proper diagnostic system before it will function, and a used module from a breaker will usually be locked to the car it came out of. We code free with any module we supply and fit, and we will tell you before you buy if your car needs a main dealer for it
• Also needed: a battery support unit during coding, because a voltage dip part way through programming a module is how a module becomes scrap
• Torque: not applicable to most modules. The mechanical units have torque figures in the instructions
• Weight: approximately 6.8 kilograms
• Warranty: two years or 24,000 miles, whichever comes first. A surcharge applies on remanufactured units and is refunded when your old unit comes back to us. The core has to be complete and it has to be the same part number, and we include a prepaid label and the packaging the new one came in.
• Coded to your VIN before dispatch: send us the VIN with the order and the module arrives ready to plug in. A module from a breaker is locked to the car it came out of and a great many of them cannot be unlocked at all
• Battery support: coding is done with a stable supply. This is why a main dealer plugs a charger in before touching a module and why a coding job done off a tired battery sometimes bricks one
• What gets replaced on a remanufactured unit: the failed components, all electrolytic capacitors, the connector pins where they are pitted, and the solder joints on the power stages. It is then tested on a rig for 24 hours
• Mileage: on an instrument cluster the mileage is transferred correctly and a written record of the transfer is supplied with the unit

What arrives

• the remanufactured unit, coded to your VIN
• a test report from the rig
• connector seals where applicable
• fitting and coding notes
• a prepaid core return label

Fitting

One to three hours for a body module, four to six for a rack or a mechatronic unit. Coding is the part people underestimate: it needs a proper diagnostic system and a stable supply, and it is included free with any module we fit. Send the VIN with the order and it arrives ready.

Which version to buy

The reason not to buy a module from a breaker is simple and it costs people hundreds of pounds a week in this country: most of these modules are married to the car they came from, and a great many cannot be unlocked at all. A remanufactured unit coded to your VIN before it is posted plugs in and works. That is the whole difference, and it is worth the money every time.