Battery Drain: If the vehicle has been sitting unused, the key fob battery might be dead, or the vehicle's main battery might be too weak to handle the initial power surge required for starting. Key Fob and Signal Problems If the buttons feel unresponsive or the LED is not illuminating, the issue is likely with the key fob itself rather than the vehicle.
2017 Jeep Grand Cherokee Remote Start Wiring Harness Inspection and Key Fob Signal Checks
Attempting to start from "N" (Neutral) or "D" (Drive) will disable the remote start feature. Additionally, physical damage or exposure to water can corrupt the circuitry.
If the safety system detects the brake is not engaged, it will shut down the engine immediately after starting. Troubleshooting and Resolution Steps To resolve the issue efficiently, follow a logical diagnostic process.
2017 Jeep Grand Cherokee Remote Start Wiring Harness Inspection and Signal Integrity
This often happens if the car door was opened incorrectly or if a key fob was programmed incorrectly. These modules manage the remote start command; if their software glitches or their internal relays fail, the signal never reaches the engine.
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