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 DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSGENERAL ELECTRICAL SYSTEM - REPAIR -- M4 (F82 & F83)
2018 BMW M4 2D Convertible, Automatic DCT Trans
General Electrical System - Repair -- M4 (F82 & F83)
2018 BMW M4 2D Convertible, Automatic DCT TransSECTION General Electrical System - Repair -- M4 (F82 & F83)
- 61 00 General Information
- Diagnosis for Condition Based Service
- Encode/program control unit(s)
- Notes for disconnecting and connecting the vehicle battery
- Notes on handling optical fibers
- Notes on handling the high pressure cleaner
- Notes on handling wiring harnesses and cables
- Repairing airbag cables
- Safety instructions for handling vehicle battery
- Encode/program control unit(s) (after vehicle test)
- 61 11 Wiring Harness
- 61 12 Auxiliary Cable
- Notes on intelligent battery sensor (IBS)
- Notes regarding the battery electronics (lithium ion battery)
- Replacing positive battery cable (from battery to luggage compartment cable connector)
- Replacing negative battery lead (Except M4 Convertible)
- Replacing wiring harness on left or right front seat
- Replacing negative battery lead (M4 Convertible)
- 61 13 Plug Connection, Terminal
- Butt connector for repairing a plug connection
- Circular connector, 13-pin, system D2.5
- Circular connector, 7-pin, 8-pin, system D2.5
- Circular connector, 20-pin, system D2.5
- Circular plugs, 4-, 7-, 10- 12-, 25-pin, System D1.5/D2.5
- Connector housing, LCC contact (load current contact)
- Control unit plugs, 25-, 35-, 55-, 83-, 88-pin
- Crimping Micro Power Quadlock contacts (MPQ)
- Crimping annular contacts
- Crimping Micro Quadlock System contacts (MQS)
- Crimping optical fibers
- Cutting, strip off insulation and crimping optical fibers
- Cutting to length and strip off insulation from cables
- Cutting to length and stripping insulation from cables
- Handling cables and optical fibers
- Inline connectors, 15-pin, System D2.5
- In-line connectors, 24-/44-pin, Hybrid System MQS/MPQ
- In-line connectors, 30-pin, System D2.5
- In-line connectors, 30-pin, Hybrid System MQS/MPQ
- In-line plugs, 20-pin, System D2.5
- In-line plugs, 2-pin, System JPT ELA
- Inline connectors, 6-, 8-pin, System MQS
- In-line plugs, 2-pin, System MDK 3 plus 2.8
- Inline plugs, 2-pin, System MPQ 2.8
- Inline plugs, 3-, 6-pin, System Elo-Power 2.8
- In-line plugs, 4-pin, System DFK ELA
- Inline plugs, 4-, 10-pin, System Elo
- Inline plugs, 8-, 12-pin, System D2.5
- In-line plugs, 6- to 50-pin, System Elo
- Installing comb connector for retrofitting/repairs
- Opening plug housings and removing contacts of different plug systems
- Socket housing (radio connector), Hybrid System MQS/MPQ
- Socket housing 42-, 43-, 46-pin, Hybrid System MQS/MPQ
- Socket housings, 2x21-, 2x27-pin, Hybrid Systems MQS/MPQ, Elo/Elo Power
- Socket housings, 5-pin, 8-pin, System MQS/MPQ
- Special tools for wiring harness repairs
- Unlocking and disconnecting different plug connections
- Unlocking and disconnecting various plug connections in electrical and hybrid vehicles
- 61 14 Power Distribution, Power Connection Points
- Removing and installing/replacing distribution box (front)
- Removing and installing/replacing distribution box (rear)
- Removing and installing/replacing power distribution box front positive battery cable
- Removing and installing/replacing rear positive battery cable distributor (Except M4 Convertible)
- Removing and installing/replacing rear positive battery cable distributor (M4 Convertible)
- 61 20 Battery
- Battery replacement information
- Notes regarding the lithium ion battery
- Evaluation of the transportability of the lithium-ion starter/auxiliary battery in the service workshops
- Vehicle battery - closed current monitoring
- Disconnecting and connecting battery earth lead
- Carrying out a voltage interruption of the 12-V battery
- Remove and install or replace battery (Except M4 Convertible)
- Charging battery
- Support voltage of the vehicle electrical system/recharge vehicle electrical system battery
- Remove and install or replace battery (M4 Convertible)
- 61 31 Switch, Sensor
- Removing and installing/replacing Drivelogic button
- Removing and installing (replacing) steering column switch cluster
- Removing and installing/replacing Start/Stop switch
- Removing and installing/replacing emergency starting coil
- Removing and installing/replacing light control unit
- Removing and installing/replacing switch for front passenger airbag deactivation
- Removing and installing operating element for assist system
- Removing and installing roof switch cluster (front) (Except M4 Convertible)
- Removing and installing/replacing button for steering wheel heating
- Removing and installing/replacing hotel position switch
- Removing and installing/replacing switch for hazard warning flashers/central locking
- Removing and installing/replacing switch for unlocking tailgate
- Removing and installing/replacing switch for automatic tailgate activation
- Removing and installing/replacing power window switch (driver's side)
- Replacing the power windows regulator on the passenger's side
- Removing and installing/replacing the shift paddles for the transmission (M sports steering wheel)
- Removing and installing/replacing A/V connecting socket
- Removing and installing/replacing USB audio interface connecting socket
- Removing and installing/replacing controller
- Removing and installing/replacing center console operating facility (Except M4 CS)
- Removing and installing operating facility for center console
- Replacing operating unit for seat adjustment (Except M4 Convertible)
- Removing and installing/replacing both multifunction steering wheel switches (M sports steering wheel)
- Removing and installing/replacing steering wheel module (M sports steering wheel)
- Removing and installing/replacing engine electrical system for lane departure warning (M sports steering wheel)
- Replacing switch for exterior mirror
- Replacing brake light switch
- Removing and installing radio and A/C control panel
- Removing and installing (replacing) gear selector switch (DKG)
- Removing and installing (replacing) receiver for radio remote control (Except M4 Convertible)
- Replacing roof switch cluster (front)
- Replace ACP (for vehicles equipped with CID)
- Removing and installing operating facility for center console (M4 CS)
- Removing and installing roof switch cluster (front) (M4 Convertible)
- Removing and installing/replacing switch for soft top operation (M4 Convertible)
- Replacing operating unit for seat adjustment (M4 Convertible)
- Removing and installing/replacing switch for loading aid (M4 Convertible)
- Removing and installing the receiver for the radio remote control (replacing) (M4 Convertible)
- 61 33 Horn
- 61 34 Power Socket
- 61 35 Control Units, Modules
- Notes on ESD protection (Electro Static Discharge)
- Overview, rain sensor (additional work when replacing the windshield/sensor replacement)
- Overview of additional work for the removal and installation or replacement of electronic components in the body area/windscreen
- Replacing and installing (replacing) the solar rain/light sensor and condensation sensor
- Removing and installing (replacing) power amplifier (LCPA) (left or right)
- Removing and installing (replacing) control unit for contactless tailgate opening
- Removing and installing (replacing) top sensor line for the contactless tailgate opening
- Removing and installing (replacing) bottom sensor line for the contactless tailgate opening
- Remove and install (replace) control unit Front Electronic Module (FEM)
- Remove and install (replace) control unit Rear Electronic Module (REM) (Except M4 Convertible)
- Removing and installing/replacing control unit for camera-based driver support systems (KAFAS)
- Removing and installing (replacing) the control unit for the regulated rear axle differential lock (GHAS)
- Initialize the rain-light-solar-condensation sensor
- Initializing rain/light sensor
- Removing and installing/replacing interior aerial for Comfort Access (front storage compartment)
- Removing and installing/replacing interior aerial for Comfort Access (rear center console)
- Removing and installing/replacing luggage compartment aerial for Comfort Access
- Removing and installing/replacing aerial for Comfort Access on left or right
- Removing and installing/replacing control unit/module for left or right seat adjustment (M4 Convertible)
- Removing and installing/replacing Convertible top module (M4 Convertible)
- Remove and install (replace) control unit Rear Electronic Module (REM) (M4 Convertible)
- Removing and installing/replacing control unit for neck warmer (M4 Convertible)
- 61 36 Relay
- 61 42 Control Unit Holder
- 61 61 Windshield Wiper
- Overview of windscreen wiper and cleaning system
- Checking contact angle of wiper on left or right (series P L7)
- Checking/adjusting contact angle of windscreen wiper arms on windscreen
- Replacing both windscreen wiper blades
- Removing and installing/replacing both windscreen wiper arms
- Removing and installing or replacing console for windscreen washer system complete with motor
- 61 67 Headlight Washer System
- 61 71 Windshield Washer System
RENDER: 1.0x
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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.