If you suspect the GEM, go ahead and get the whole thing on eBay or wherever Remove the audio unit.
Enter the module data (module address and line are displayed to the left of the three entry boxes) and press check mark. The reset of BMS is necessary in Ford trucks to perform rightly. Battery tests The Toyota Fortuner, for instance can’t match the HiLux’s 3. I do not hear anything when I shift into 4X4. trying to figure out battery draw issue, gem module question. That is a code that is set when the GEM has 'noticed' a loss of power. Pulled off side of road, checked tires and turned off vehicle to attempt to reset. You can check the grounds coming from the switch that goes to the gem module and it should change from open to ground when you open and close the door. When the ABS light / comes on in your F-150, the anti-lock braking system is disabled. 2007 ford ranger gem module reset not working f150 Potential Solutions: Re-sealing your windshield.