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.
61 13 ... Opening Plug Housings And Removing Contacts Of Different Plug Systems
Abbreviations and what they mean:
| MDK 3plus | Miniature double flat spring contact |
| JPT ELA | Junior Power Timer flat spring contacts with strand sealing |
| DFK ELA | Double flat spring contacts with strand sealing |
| Elo | Electronic contacts with and without strand sealing Manufacturer: Siemens |
| Elo Power | Electronic contacts for heavy loads with and without strand sealing Manufacturer: Siemens |
| MQS | Micro Quadlock System electronic contacts with and without strand sealing Manufacturer: AMP |
| MPQ | Micro Power Quadlock electronic contacts for heavy loads with and without strand sealing Manufacturer: AMP |
| D 1.5 / 2.5 | Round contacts of 1.5 mm or 2.5 mm diameter |
Ultrasonic-welded connectors:
Ultrasonic-welded connectors (1) can be identified by the welds (2) on their longitudinal side.
The contacts of these connectors cannot be replaced. Replace plug completely.
Release and press-out tool 61 1 150
Repair instructions for opening plug housings and removing contacts of different plug systems
Plug system D 1.5/D 2.5:
- Circular plugs, 7-, 8-pin, System D 2.5
- Circular plugs, 13-pin, System D 2.5
- Circular plugs, 20-pin, System D 2.5
- Circular plugs, 4-, 7-, 10-, 12-, 25-pin, System D 1.5/D 2.5
- In-line plugs, 15-pin, System D 2.5
- In-line plugs, 8-, 12-pin, System D 2.5
- In-line plugs, 30-pin, System D 2.5
- In-line plugs, 20-pin, System D 2.5
Plug system JPT/MDK/DFK:
- In-line plugs, 2-pin, System JPT ELA
- In-line plugs, 2-pin, System MDK 3plus 2.8
- In-line plugs, 4-pin, System DFK ELA
Plug system Elo/Elo-Power:
- In-line plugs, 4-, 10-pin, System Elo
- In-line plugs, 6- to 50-pin, System Elo
- In-line plugs, 3-, 6-pin, System Elo-Power 2.8
Plug system MQS/MPQ:
- In-line plugs, 6-, 8-pin, System MQS
- In-line plugs, 2-pin, System MPQ 2.8
- Control unit plugs, 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 plugs, 30-pin, Hybrid System MQS/MPQ
- Socket housings, 5-, 8-pin, System MQS/MPQ
- Socket housing (radio plug), 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.