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.
2008 Jeep Commander Overland, RWDFACTORY OEM SERVICE PROCEDURE
Upper Bank Switch Connector End View
SWITCH-BANK-UPPER - 12-WAY
| CAV | CIRCUIT | FUNCTION |
| 1 | - | - |
| 2 | F921 20PK/YL | FUSED RUN RELAY OUTPUT |
| 3 | G105 20VT/YL | C/T SWITCH INPUT |
| 4 | L13 20WY/YL | HEADLAMP LEVEL SENSOR SIGNAL |
| 5 | L778 20WT/LB | FUSED PARK LAMP RELAY OUTPUT |
| 6 | C105 20LB/LG | REAR HVAC CONTROL |
| 7 | G108 20VT/DB | RESET SWITCH INPUT |
| 8 | Z18 20BK/LB | GROUND |
| 9 | G102 20VT/GY | MENU SWITCH INPUT |
| 10 | G103 20VT/LB | STEP SWITCH INPUT |
| 11 | E2 20OR/BR | PANEL LAMPS DRIVER |
| 12 | Z906 20BK | GROUND |
Factory Service Tools
Use the Manual With the Right Hardware
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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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