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.
2016 BMW 340i Automatic TransFACTORY OEM SERVICE PROCEDURE
Engine Electrical System - Repair (F30, 6-CYL RWD)
- 12 00 Engine Electrical System
- 1200 Instructions for removal and replacement of control units
- 1200 Instructions for working on the ignition system
- 1200 Notes/information on start assistance (jump starting)
- (5147-01 Removing the front underbody protection)
- (51 47 491 Removing rear underbody protection)
- (5175-01 Remove the support for the underbody protection)
- 12 12 Spark Plugs
- 12 13 Ignition Coils
- 12 14 Engine Control Module And Sensors
- 12 14 521 Replace crankshaft sensor (after vehicle diagnosis)
- 12 14 523 Replacing the camshaft sensor of the intake camshaft (after vehicle diagnosis)
- 12 14 524 Replacing the camshaft sensor of the exhaust camshaft (after vehicle diagnosis)
- 12 14 550 Replacing the control unit of the Digital Motor Electronics (After vehicle diagnosis)
- 12 14 602 Replacing knock sensor (after vehicle diagnosis) (cylinders 1+2)
- 12 14 604 Replacing knock sensor (after vehicle diagnosis) (cylinders 3+4)
- 12 14 700 Programming/encoding the control unit (DME)
- 12 31 Alternator
- 12 41 Starter Motor
- 12 42 Starter Cables
- 12 51 Engine Wiring Harness
- 12 51 210 Replacing the wiring harness section for injectors and ignition coils
- 12 51 215 Replace wiring harness section for Valvetronic servomotor
- 12 51 235 Remove and install/replace Module 1, sensor system engine wiring
- 12 51 240 Remove and install/replace Module 2, sensor system engine wiring
- 12 51 245 Removing and installing/replacing transmission module engine wiring
- 12 61 Oil Pressure Switch, Oil Level Sensor
- 12 63 Switch And Relay
- 12 90 Engine Control Unit Holder
Factory Service Tools
Use the Manual With the Right Hardware
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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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