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.
2011 BMW X5 MFACTORY OEM SERVICE PROCEDURE
Junction Box X14272 Connector End View
PIN Assignments At Plug Connector X14272
| Pin | Type | Description/Signal type | Connection/Measuring notes |
|---|---|---|---|
| 1 | - | Not used | |
| 2 | E | Signal, fanfare horn | Steering column switch cluster |
| 3 | - | Not used | |
| 4 | - | Not used | |
| 5 | - | Not used | |
| 6 | - | Not used | |
| 7 | - | Not used | |
| 8 | M | Ground Hazard warning switch | Hazard warning switch |
| 9 | - | Not used | |
| 10 | E/A | CAN bus high | Heating/air conditioning system |
| 11 | E/A | CAN bus high | CAN bus connector |
| 12 | E/A | CAN bus low | Heating/air conditioning system |
| 13 | - | Not used | |
| 14 | - | Not used | |
| 15 | - | Not used | |
| 16 | - | Not used | |
| 17 | - | Not used | |
| 18 | - | Not used | |
| 19 | - | Not used | |
| 20 | - | Not used | |
| 21 | - | Not used | |
| 22 | - | Not used | |
| 23 | - | Not used | |
| 24 | - | Not used | |
| 25 | - | Not used | |
| 26 | M | Ground | Ground point |
| 27 | - | Not used | |
| 28 | - | Not used | |
| 29 | E/A | CAN bus high | Electrochromic interior rear view mirror with high beam assistant |
| 30 | E/A | CAN bus low | CAN bus connector |
| 31 | E/A | CAN bus low | Electrochromic interior rear view mirror with high beam assistant |
| 32 | - | Not used | |
| 33 | - | Not used | |
| 34 | - | Not used | |
| 35 | - | Not used | |
| 36 | - | Not used | |
| 37 | - | Not used | |
| 38 | - | Not used | |
| 39 | - | Not used | |
| 40 | - | Not used | |
| 41 | - | Not used | |
| 42 | - | Not used | |
| 43 | - | Not used | |
| 44 | - | Not used | |
| 45 | - | Not used | |
| 46 | - | Not used | |
| 47 | E/A | right-hand drive CAN bus high | Crash safety module |
| 47 | E/A | left-hand drive CAN bus high | Function control centre, roof |
| 48 | E/A | right-hand drive CAN bus low | Crash safety module |
| 48 | E/A | left-hand drive CAN bus low | Function control centre, roof |
| 49 | - | Not used | |
| 50 | A | Wake-up signal, terminal 15 | Steering column switch cluster |
| 51 | - | Not used | |
| 52 | - | Not used | |
| 53 | - | Not used | |
| 54 | - | Not used |
Factory Service Tools
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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.
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