Special Tools and Their Use For Repair

CAUTION: Always find cause of damage (e.g. sharp-edged body parts, faulty equipment, seized mechanisms, corrosion from penetrated water, etc.)
before repairing a wiring harness. Read fault memory. Eliminate cause of damage. Disconnect battery negative terminal.


WARNING: Only repair a wiring harness if according to schematics no safety- relevant systems (e.g. ABS, active rear-axle kinematics, airbag, etc.) are influenced. Otherwise replace faulty wiring harness or use repair cables.

After a repair on the wiring harness, perform function check and
interrogate fault memory once again. Eliminate new faults if applicable and clear fault memories.

Instructions are supplied with special tool 61 9 020. Information for ordering parts and a list of parts also form part of these instructions.







Repair ranges I, II, III for vehicle electrical system
I Order No.: 81 24 9 408 080
II Order No.: 81 24 9 408 300
III Order No.: 81 24 9 408 400

these repair ranges are available from BMW Parts Service.

they are primarily required for repairs on models of E12, E21, E23, E24, E28, E30 Series.

Comply with working instructions for special tools from these repair ranges.







Repair range IV for vehicle electrical circuit
IV Order No.: 61 9 020
This repair range and its components are sold by CARTOOL.

Working instructions for repair range IV, refer to:
Cut cable to length
Strip off insulation
Crimping on stops
Wiring harness repair using crimp connectors
Installing fan connector for retrofit equipment