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 MANUALSBMW2018M4 2D CONVERTIBLE, AUTOMATIC DCT TRANSREPAIR AND DIAGNOSISTRANSMISSIONMANUAL TRANSGEAR SHIFT MECHANISM - OPERATING FLUIDSGREASING AND ASSEMBLING
2018 BMW M4 2D Convertible, Automatic DCT Trans
Greasing And Assembling
2018 BMW M4 2D Convertible, Automatic DCT TransSECTION Greasing And Assembling
Components of the gear shift mechanism located outside of the transmission housings, such as ball cups, bearing bushings, gearshift joints, etc. may be lubricated with Polylub GLY 801.
Greasing:
| Tradename | Manufacturer/Supplier | BMW Part Number |
|---|---|---|
| Polylub GLY 801 | Kluber | 81 22 9 407 647 |
Assembling:
| Tradename | BMW Part Number |
|---|---|
| Circolight lubricant | 83 19 9 407 771 |
RENDER: 1.0x
NO RELATED
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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.