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 4WD V6-3.7LFACTORY OEM SERVICE PROCEDURE
Remote Start Inoperative-Antenna
REMOTE START INOPERATIVE-ANTENNA
For a complete wiring diagram Consult Diagrams/Electrical.
Theory of Operation
The customer may notice that the signal range of the Remote Keyless Entry (RKE) system is reduced. The RKE key fob may need to be closer than 3 meters (10 feet) before the functions available on the key fob will operate. This condition may be due to the RKE antenna. The diagnostic flow chart is provide as a diagnostic aid for dealer technician.
Diagnostic Test
1. LOCK/UNLOCK FUNCTION
NOTE: For all RKE tests, the key must be out of the ignition.
Does the Lock/Unlock function with the interior door switches?
Yes
- Go To 2
No
- Perform Power Lock/Unlock System diagnosis.
2. RKE FUNCTION AT 20 FEET
Does the RKE Function at 20 feet?
Yes
- Go To 3
No
- Go To 4
3. RKE FUNCTION AT 100 FEET
Does the RKE Function at 100 feet?
Yes
- Test complete.
No
- Replace the antenna.
4. WCM/WIN DTCS
Does the WCMWIN display any DTCs?
Yes
- Perform WCM/WIN diagnosis.
No
- Go To 5
5. RKE FUNCTION INSIDE VEHICLE
Sit inside the vehicle.
Push the Key Fob RKE Lock/Unlock buttons.
Does the RKE Lock/Unlock work?
Yes
- Go To 6
No
- Go To 9
6. ANTENNA COAX CABLE NOT PROPERLY CONNECTED
Pull on the Antenna COAX cable connector at the WIN.
Did the connector come off without releasing the lock tab (not properly seated)?
Yes
- Connect Antenna.
- Go To 2
No
- Go To 7
7. VERIFY COAX CONNECTION AT WIN
Pull Antenna connector off WIN. Verify no bent pins.
Are there any bent pins?
Yes
- Replace antenna.
- Go To 2
No
- Go To 8
8. PINCHED WIRE
Inspect the ANTENNA Lead COAX Cable for a pinched wire.
Has the COAX cable been pinched or damaged?
Yes
- Replace antenna.
- Go To 2
No
- Perform WIN diagnostics.
9. RKE FUNCTION INSIDE VEHICLE
Disconnect the Antenna COAX Cable lead connector to WIN.
Sit inside the vehicle. Push the RKE Key Fob Lock/Unlock buttons.
Does the RKE Lock/Unlock work?
Yes
- Replace the antenna.
No
- Go To10
10. CHECK FOR 12 VOLTS AT WIN
Connect the Antenna Lead to WIN.
Disconnect the WIN harness connector.
Using the appropriate wiring diagrams, check for Fused B+ at the WIN harness connector.
Is Fused B+ present?
Yes
- Perform WIN diagnostics.
No
- Repair the appropriate circuits.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.