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 MANUALSBMW2010128I 2D CONVERTIBLE, N51, AUTOMATICREPAIR AND DIAGNOSISELECTRICALMOTORS, SWITCHES, RELAYSGENERAL ELECTRICAL SYSTEM - REPAIR (E88)PLUG CONNECTIONS, TERMINALS, POWER DISTRIBUTION BOX61 13... CRIMPING MICRO QUADLOCK SYSTEM CONTACTS (MQS)SPECIAL TOOLS REQUIRED
2010 BMW 128i 2D Convertible, N51, Automatic
Special Tools Required
2010 BMW 128i 2D Convertible, N51, AutomaticSECTION Special Tools Required
To crimp MQS contacts, use pliers 61 4 321 (1) in conjunction with crimping head 61 4 324 (2) from crimping set 61 4 320 .
NOTE:
Pliers (1) open automatically as far as they will go when handles are pressed together.
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.