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.
Notes for opening contacts and locks of different plug contact systems
Special tools required:
- 61 0 300
- 61 0 400
- 61 1 100
| Abbreviations of contacts and what they mean: | |
|---|---|
| ELA | Strand seal |
| D 1.5/2.5/3.5 | Round contacts with 1.5 mm, 2.5 mm or 3.5 mm diameter |
| MDK | Miniature double flat spring contact |
| JPT | Junior Power timer |
| DFK | Double flat spring contacts |
| Elo | Electronic contacts |
| Elo Power | Electronic contacts for heavy load |
| MQS | Micro Quadlock system |
| MPQ | Micro Power Quadlock |
| MLK | Mini laminated contact |
| SLK | Sensor laminated contact |
| LSK | Load current contact |
| MLK | Mini laminated contact |
| Mcon | Multi contact |
Ultrasonically welded connectors (1) must be replaced completely.
Ultrasonic-welded connectors (1) can be identified by the welds (2) on their longitudinal side.
- Unlocking and pressing-off tool 61 1 150 is replaced as of 09/2005 by 61 0 300 (BMW) and 61 0 400 (MINI)
- Release and pressing-off tool 61 1 100 (engine)
Repair instructions for opening connector housings and removing contacts of different connector systems:
Connector system D 1.5/D 2.5:
- CIRCULAR CONNECTORS, 7- OR 8-PIN, SYSTEM D 2.5 .
- CIRCULAR CONNECTORS, 13-PIN, SYSTEM D 2.5 .
- CIRCULAR CONNECTORS, 20-PIN, SYSTEM D 2.5 .
- CIRCULAR CONNECTORS, 4-, 7-, 10-, 12- OR 25-PIN, SYSTEM D 1.5/D 2.5 .
- IN-LINE CONNECTORS, 15-PIN, SYSTEM D 2.5 .
- IN-LINE CONNECTORS, 8-, 12-PIN, SYSTEM D 2.5 .
- IN-LINE CONNECTORS, 30-PIN, SYSTEM D 2.5 .
- IN-LINE CONNECTORS, 20-PIN, SYSTEM D 2.5 .
Connector system JPT/MDK/DFK:
- IN-LINE CONNECTORS, 2-PIN, SYSTEM JPT ELA .
- IN-LINE PLUGS, 2-PIN, SYSTEM MDK 3 PLUS 2.8 .
- IN-LINE PLUGS, 4-PIN, SYSTEM DFK ELA .
Connector system Elo/Elo Power:
- INLINE PLUGS, 4-, 10-PIN, SYSTEM ELO .
- IN-LINE CONNECTORS, 6- TO 50-PIN, SYSTEM ELO .
- INLINE PLUGS, 3-, 6-PIN, SYSTEM ELO-POWER 2.8 .
Connector system LSK:
Connector system MQS/MPQ:
- INLINE CONNECTORS, 6-, 8-PIN, SYSTEM MQS .
- INLINE PLUGS, 2-PIN, SYSTEM MPQ 2.8 .
- CONTROL UNIT CONNECTORS, 25-, 35-, 55-, 83-, 88-PIN .
- IN-LINE PLUGS, 24-PIN, HYBRID SYSTEM MQS/MPQ .
- SOCKET HOUSING 42-, 43-PIN, HYBRID SYSTEM MQS/MPQ .
- SOCKET HOUSINGS 2X21-, 2X27-PIN, HYBRID SYSTEM MQS/MPQ, ELO/ELO POWER .
- IN-LINE CONNECTORS, 30-PIN, HYBRID SYSTEM MQS/MPQ .
- SOCKET HOUSINGS, 5-, 8-PIN, SYSTEM MQS/MPQ .
- SOCKET HOUSING (RADIO CONNECTOR), HYBRID SYSTEM MQS/MPQ .
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.