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 320i Automatic TransFACTORY OEM SERVICE PROCEDURE
Engine - Repair - F30 (1 Of 4)
- Engine, General
- 11 00 039 Checking compression of all cylinders (N20, N26)
- 11 00 039 Checking compression of all cylinders (N55 hybrid)
- 11 00 039 Checking compression of all cylinders (N55)
- 31 10 001 Completely removing and installing complete front axle with engine and transmission (N55 automatic transmission with four-wheel drive)
- 31 10 001 Completely removing and installing front axle with engine and transmission (N55)
- 31 10 001 Completely removing and installing front axle with engine and transmission (N55 automatic transmission)
- 31 10 001 Completely removing and installing front axle with engine and transmission (N55 hybrid car)
- 00 Danger of poisoning if oil is ingested/absorbed through the skin
- 11 00 000 Differences among engine block versions (N47)
- Engine identification
- 11 00.. Engine oil change (N47 D20 1)
- 11 00 300 Engine oil consumption measurement
- 11 00.. Engine oil service (N20, N26)
- 11.....Equipment recoding special tool number of the transverse member for fixing the engine in the installation location
- 11 00.. Handling components after flood damage
- 11 00 091 Installing replacement engine (N47T)
- Mounting engine on assembly stand (N47 D20 O1)
- 11 00 Mounting engine on assembly stand (N55)
- 11 00 Mounting the engine on the assembly stand (N20, N26)
- 11 00.. Overview of consumables
- 11 00 050 Remove and install the engine (N47D20 K/U/O/T 1)
- 31 10 001 Removing and installing complete front axle with engine and transmission (N55 four-wheel drive)
- 11 00 050 Removing and installing engine (N20, N26)
- 11 00 050 Removing and installing engine (N55 hybrid car)
- 11 00 050 Removing and installing engine (N55)
- 11 12 070 Removing and installing/renewing acoustic cover (B58)
- 11 12 090 Removing and installing/renewing acoustic cover (N20)
- 11 12 090 Removing and installing/renewing acoustic cover (N26)
- 11 00.. Removing and installing/replacing rear acoustic cover (corrosion protection) (B58)
- 00 Risk of injury if oil comes into contact with eyes and skin
- 00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
- 00 Safety instructions for handling oil
- 11 00 670 Secure engine in installation position (N55)
- 11 00 670 Secure Engine In Installation Position (N20, N26)
- 11 00 670 Securing the engine in the installation position (N55 Hybrid)
- 11 00.. Service - engine oil (N55)
- 11 00.. Service engine oil (N55 hybrid)
- Engine Block
- Cylinder Head And Cylinder Head Cover
- 11 12 729 Checking cylinder head for water leaks (N55)
- 11 12 729 Checking cylinder head for watertightness (N20, N26)
- 11 12 729 Checking cylinder head for watertightness (N55 hybrid)
- 11 12 729 Checking the cylinder head for watertightness (N47D20 K/U/O/T 1)
- 11 12 800 Cleaning cylinder heat intake channels and intake plenum (N47, N57)
- 11 12 719 Milling cylinder head lower face (N20, N26)
- 11 12 040 Removing and installing all ignition coil and injector wells (N55 Hybrid)
- 11 12 040 Removing and installing all ignition coils and injector wells (N20, N26)
- 11 12 040 Removing and installing all ignition coils and injector wells (N55)
- 11 12 100 Removing and installing cylinder head (N20, 26)
- 11 12 100 Removing and installing cylinder head (N47D20 K/U/O/T 1)
- 11 12 100 Removing and installing cylinder head (N55)
- 11 12 100 Removing and installing cylinder head (N55, hybrid)
- 11 12 070 Removing and installing/renewing acoustic cover (B58)
- 11 12 090 Removing and installing/renewing acoustic cover (N20)
- 11 12 090 Removing and installing/renewing acoustic cover (N26)
- 34 33 200 Removing and installing/replacing electric vacuum pump
- 11 12 000 Removing and installing/sealing cylinder head cover (N20, N26)
- 11 12 000 Removing and installing/sealing cylinder head cover (N47D20 K/U/O/T 1)
- 11 12 000 Removing and installing/sealing cylinder head cover (N55 hybrid)
- 11 12 000 Removing and installing/sealing cylinder head cover (N55)
- 11 12 101 Replacing cylinder head gasket (N20, N26)
- 11 12 501 Replacing cylinder head gasket (N47D20 K/U/O/T 1)
- 11 12 101 Replacing cylinder head gasket (N55 hybrid)
- 11 12 101 Replacing cylinder head gasket (N55)
- 11 12 719 Resurfacing cylinder head lower face (N55 hybrid)
- 11 12 719 Resurfacing cylinder head lower face (N55)
- Oil Sump
- 11 13 000 Removing and fitting, sealing or replacing the oil sump (N20 all-wheel drive vehicle)
- 11 13 000 Removing and installing, sealing or replacing oil sump (N20, N26)
- 11 13 000 Removing and installing, sealing or replacing oil sump (N47D20 K/U/O/T 1)
- 11 13 000 Removing and installing, sealing or replacing oil sump (N55 hybrid)
- 11 13 000 Removing and installing, sealing or replacing oil sump (N55)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.