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.
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HOMESERVICE MANUALSDODGE AND RAM2020DURANGO GT, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICES(DRIVER DOOR MODULE (DDM) (DMFL) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGB1E64-00-LEFT MIRROR SELECT SWITCH - STUCKDIAGNOSTIC TEST
2020 Dodge and Ram Durango GT, AWD
Diagnostic Test
2020 Dodge and Ram Durango GT, AWDSECTION Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- Turn the ignition on.
- With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
- Press and release the Left Mirror Select switch several times and then wait 30 seconds.
- With the scan tool, read DDM DTCs.
Is the DTC active?
Yes
- Replace the Window/Door Lock Switch in accordance with the Service Information. Refer to SWITCH, LOCK, REMOVAL .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
No
- Go To 2
- INSPECT THE MIRROR SELECT SWITCH FOR DAMAGE
- Turn the ignition off.
- Inspect the Mirror Select Switch for damage.
Is the switch assembly damaged?
Yes
- Replace the Driver Mirror Select Switch in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
No
- Go To 3
- INSPECT FOR OBJECT OR SUBSTANCE CAUSING LEFT MIRROR SELECT SWITCH TO STAY OR STICK IN A PUSHED POSITION
- Inspect the Left Mirror Select switch for anything that would cause it to stay or stick in a pushed position.
Is anything present that would cause the Left Mirror Select switch to stay or stick in a pushed position?
Yes
- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TESTSTANDARD PROCEDURE .
No
- Go To 4
- Inspect the Left Mirror Select switch for anything that would cause it to stay or stick in a pushed position.
- CHECK THE MIRROR SELECT SWITCH
- Turn the ignition on.
- Press and release either Mirror Select switch.
- Operate the Mirror Select switch in all positions several times and then wait 30 seconds.
- With the scan tool, read DDM DTCs.
Is the DTC active?
Yes
- Replace the Driver Mirror Select Switch in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
No
- The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension and repair as necessary. If no problems are found, test complete.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
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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.