BMW G21 — repair instructions and wiring diagrams
Original BMW documentation for the G21 body — what is commonly known as BMW TIS: step-by-step repair and maintenance procedures with illustrations, tightening torques and specifications. Navigation follows the vehicle’s assemblies, as in the factory system.
This body series also has wiring diagrams (what is commonly known as BMW WDS): circuit diagrams, connectors and pinouts, component locations.
- Production years
- 2018–2022
- Body types
- touring
- Documents
- 10,223
- Wiring diagrams
- available
Open the G21 catalogue Search by title
Model variants
Documents apply to a specific variant: after picking the body you specify engine, drive and build date, and irrelevant procedures are filtered out.
- 316d
- 318d
- 318i
- 320d
- 320d xDrive
- 320e
- 320e xDrive
- 320i
- 330d
- 330d xDrive
- 330e
- 330e xDrive
- 330i
- 330i xDrive
- ALPINA B3
- ALPINA D3s
- M340d xDrive
- M340i xDrive
Example procedures for the G21
One of the most detailed procedures from each section — so you can see what is actually inside. The full list opens after a free registration.
- Replacing crankshaft11 Engine
- Completely removing and installing front axle with engine and transmission31 Front axle, front suspension
- Replace wiring harness section for engine12 Engine electrical system
- Replacing the injection system pressure regulator (after vehicle diagnosis)13 Fuel preparation and control
- Removing and installing/replacing evaporator (heating and air-conditioning unit removed)64 Heating and air conditioning
- Replacing the radial shaft seal for the torque converter24 Automatic transmission
- Removing and installing/replacing the exhaust manifold18 Exhaust system
- Replacing right engine mounting bracket22 Engine and transmission mounting
- Replacing slider for rear sliding headliner54 Slide/tilt sunroof and soft top
- Replace electrical steering gear (EPS) (Flat rate specification without wheel alignment) (after vehicle diagnosis) (flat rate specification without programming/encoding, see 61 00 ...)32 Steering and Wheel Alignment
- Replacing carrier for dashboard (without draw-off, evacuation and filling)51 Body equipment
- Servicing particulate filter0 Maintenance and general note
- Remove and install/replace the return line to the transmission oil cooler17 Cooling
- Replacing all rubber mounts for rear axle support33 Rear axle, rear-wheel drive, guide
- Removing and installing/replacing fuel filler pipe16 Fuel supply
- Removing and installing or replacing airbag module on passenger's side72 Body parts and accessories
- Removing and installing head-up display62 Instruments
- Removing and installing high-voltage battery unit61 General vehicle electrical system
- Removing and installing/replacing clutch21 Clutch
- Removing and installing/renewing roof aerial (headlining lowered)65 Audio, navigation, information systems
- Replacing tailgate41 Body
- Replacing the radial shaft seal for the drive shaft23 Manual gearbox
- Replacing the telematics control unit under the headlining (Without panoramic glass sunroof) (after vehicle diagnosis) (flat rate unit specification without programming/encoding, see 61 00 …)84 Communication systems
- Replacing grooved ball bearing in propeller shaft centre bearing26 Propeller shaft