Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 BMW X1FACTORY OEM SERVICE PROCEDURE
Automatic Transmission - Repair
- Automatic Transmission (General)
- 00 Safety instructions for handling oil
- 23 Transmission designations
- 23... Universal BMW transmission take-up
- 23..... Universal transmission retaining bridge
- 24 00 018 Adjusting shift lever
- 00 11 500 Checking/topping up oil level in automatic transmission (GA8HP45Z) (N20)
- 00 11 237 Checking/topping up oil level in automatic transmission (GA6HP19Z) (N55)
- 24 00 054 Installing exchange transmission (GA8HP45Z) (N20, RWD)
- 24 00 054 Installing exchange gearbox (GA8HP45Z) (N20, AWD)
- 24 00 050 Installing exchange transmission (GA6HP19Z) (N55)
- 24 00... Overview of transmission housing (GA6HP19Z) (N55)
- 24 00... Overview of transmission housing (GA8HP45Z) (N20, RWD)
- 24 00... Overview of transmission housing (GA8HP45Z) (N20, AWD)
- 24 00 033 Removing and installing automatic transmission (GA8HP45Z) (N20, RWD)
- 24 00 033 Removing and installing automatic transmission (GA8HP45Z) (N20, AWD)
- 24 00 030 Removing and installing automatic transmission (6HP19Z) (N55)
- Oil Sump
- Output Flange Radial Shaft Seal
- Seal For Gear Selector Shaft
- Oil Accumulator
- Seals, O-Rings
- Shift Valves, Parking Lock
- 24 34... Unlock transmission lock electronically
- 24 34... Manually releasing parking lock (from vehicle underbody) 8HP transmission (N20)
- 24 34... Notes on Mechatronics (GA8HP45Z) (N20)
- 24 34... Notes on Mechatronics (GA6HP19Z) (N55)
- 24 34 564 Replacing Mechatronics (GA8HP45Z) (N20)
- 24 34 562 Replacing Mechatronics (GA6HP19Z) (N55)
- 24 34 022 Replacing sealing sleeve for transmission housing (GA8HP45Z) (N20)
- 24 34 021 Replacing sealing sleeve for transmission housing (GA6HP19Z) (N55)
- Torque Converter
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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