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.
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HOMESERVICE MANUALSBMW2013128I 2D CONVERTIBLE, ENG CD N52, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2420 (AUTOMATIC TRANSMISSION - REPAIR - F12)
2013 BMW 128i 2D Convertible, Eng CD N52, Standard Trans
Section 2420 (Automatic Transmission - Repair - F12)
2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransSECTION Section 2420 (Automatic Transmission - Repair - F12)
WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2018 BMW M6, 2018 BMW 650i xDrive, 2018 BMW 650i, 2018 BMW 640i xDrive, and 2018 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.
- Transmission In General
- 00 Danger of poisoning if oil is ingested/absorbed through the skin
- 00 11 500 GA8HP70Z Checking/topping up oil level in automatic transmission (GA8HP45Z, GA8HP50Z, GA8HP90Z)
- 24 00 055 Installing exchange gearbox (GA8HP70Z)
- 24 00 054 Installing exchange transmission (GA8HP45Z)
- 24 00 055 Installing exchange transmission (GA8HP70Z) N63 AWD
- 24 00... Overview of gearbox housing (GA8HP45Z, GA8HP70Z)
- 24 00... Overview of transmission housing (GA8HP70Z)
- 24 00 033 Removing and installing automatic transmission (GA8HP45Z)
- 24 00 034 Removing and installing automatic transmission (GA8HP70Z) N63
- 24 00 034 Removing and installing automatic transmission (GA8HP70Z) N63 AWD
- 28 00 001 Removing and installing twin-clutch gearbox (GS7D36SG) S63
- 00 Risk of injury if oil comes into contact with eyes and skin
- 00 Safety instructions for handling oil
- 23 Transmission designations
- 23... Universal BMW transmission take-up
- 23..... Universal transmission retaining bridge
- Transmission Case, Oil Sump
- Torque Converter Bearing, Seal
- Extension Housing, Bearings, Seal
- 24 20 012 Replace output flange (GA8HP45Z, GA8HP70Z, GA8HP90Z)
- 24 13 015 Replace radial shaft seal for output flange (GA8HP45Z)
- 24 13 017 Replace radial shaft seal for output flange (GA8HP70Z)
- 24 13 017 Replacing output flange radial shaft seal (GA8HP70Z) AWD
- 28 00 060 Replacing output flange shaft seal (GS7D36SG)
- Mechanical Attachments
- HYDR/El Control Components/Elements
- Oil Pump
- Shift Valves, Parking Lock
- 24..... Manually releasing parking lock
- 24 34... Manually releasing parking lock (from vehicle underbody) transmission GA8HP
- 24 34... Notes on mechatronics (GA8HP45Z, GA8HP70Z, GA8HP90Z)
- 28 60 010 Removing and installing mechatronics (GS7D36SG)
- 28 40 000 Removing and installing or replacing clutch cover (GS7D36SG)
- 28 40 020 Removing and installing or replacing clutch support (GS7D36SG)
- 28 10 020 Removing and installing or replacing combination sensor (GS7D36SG)
- 28 10 010 Removing and installing or replacing pump unit (GS7D36SG)
- 28 40 010 Removing and installing or replacing twin clutch (GS7D36SG)
- 28 60 030 Removing and installing/replacing the hydraulic cap (GS7D36SG)
- 24 34 564 Replacing mechatronics (GA8HP45Z)
- 24 34 565 Replacing mechatronics (GA8HP70Z)
- 28 60 514 Replacing mechatronics (GS7D36SG)
- 24 30 100 Replacing oil accumulator (GA8HP45Z)
- 24 30 101 Replacing oil reservoir (GA8HP70Z)
- 28 40 050 Replacing shaft seal for clutch cover (GS7D36SG)
- 28 60 020 Replacing wiring harness (GS7D36SG)
- 24 34... Unlock transmission lock electronically
- Torque Converter
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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.