how to fix the remote start not working on Cadillac Escalade T1XX (2021-Present)

Symptoms

• Remote start button does not respond when pressed.
• Dashboard lights do not illuminate upon attempting remote start.
• Engine does not crank or start remotely.
• Check engine light may be illuminated.
• Security light may be flashing or illuminated.

Diagnostic Steps

1. Check the vehicle's battery voltage to ensure it is fully charged.
2. Verify that the key fob battery is functional and replace if necessary.
3. Scan the vehicle for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
4. Inspect the remote start system fuse in the fuse box for any blown fuses.
5. Ensure that all doors and the hood are properly closed, as the remote start system requires them to be secure.
6. Test the key fob's functionality by attempting to unlock/lock the doors.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked in a safe, well-ventilated area.
• Disconnect the vehicle battery to prevent electrical shorts during the repair process.

2. Inspect Key Fob Battery

• Remove the key fob casing using a small flathead screwdriver.
• Replace the old battery with a new CR2032 battery, ensuring proper polarity.
• Reassemble the key fob casing.

3. Check and Replace Fuse

• Locate the fuse box, which is typically found under the dashboard or in the engine compartment.
• Refer to the vehicle's owner manual to identify the specific fuse for the remote start system.
• Remove the fuse using a fuse puller or pliers, and inspect it for damage.
• If the fuse is blown, replace it with a new fuse of the same amperage rating.

4. Inspect Vehicle Security System

• Reconnect the vehicle battery.
• Attempt to reset the vehicle’s security system by locking and unlocking the doors using the key fob.
• If applicable, use the vehicle's onboard diagnostics to reset any DTCs related to the remote start.

5. Verify Remote Start Functionality

• Test the remote start feature by pressing the remote start button on the key fob.
• Ensure the vehicle starts successfully and the engine runs for the programmed duration.