why does my Ford F-150's remote start not work in cold weather

Ford F-150 13th Generation (2015-2020)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

496 words

Problem Statement

Learn how to diagnose and fix remote start issues in Ford F-150 during cold weather. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts or shocks

Symptoms

•Remote start feature fails to activate
•Engine does not crank or start when attempting remote start
•Dashboard lights may flash without engine start
•Possible 'Check Engine' light illumination
•Reduced battery performance or low voltage readings

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter, ensuring it meets the required specifications (typically above 12.4 volts)
2
Inspect the fob battery for sufficient voltage; replace if necessary
3
Verify that all doors are securely closed and that the hood switch is functioning correctly
4
Check for any diagnostic trouble codes (DTCs) using an OBD-II scanner
5
Examine remote start settings in the vehicle's onboard computer, ensuring they are correctly configured
6
Test the remote start feature at a moderate temperature to rule out environmental factors

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Multimeter
•OBD-II scanner
•Small flathead screwdriver

Parts Required

•Replacement battery for the remote fob
•Potential replacement hood switch (if defective)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter, ensuring it meets the required specifications (typically above 12.4 volts)
2
Inspect the fob battery for sufficient voltage; replace if necessary
3
Verify that all doors are securely closed and that the hood switch is functioning correctly
4
Check for any diagnostic trouble codes (DTCs) using an OBD-II scanner
5
Examine remote start settings in the vehicle's onboard computer, ensuring they are correctly configured
6
Test the remote start feature at a moderate temperature to rule out environmental factors

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery cable for safety.

2. Battery Inspection

Tools Required: Multimeter
Sub-steps:
1. Use a multimeter to measure the battery voltage.
2. If the voltage is below 12.4 volts, charge or replace the battery.

3. Fob Battery Replacement

Tools Required: Small flathead screwdriver
Sub-steps:
1. Open the remote fob using the screwdriver.
2. Replace the old battery with a new one of the same type (typically CR2032).
3. Reassemble the fob and test the remote start function.

4. Hood Switch Inspection

Tools Required: Multimeter
Sub-steps:
1. Locate the hood switch and ensure it’s clean and free of debris.
2. Use a multimeter to test the continuity of the switch; replace if defective.

5. Reprogramming Remote Start Settings

Tools Required: OBD-II scanner
Sub-steps:
1. Connect the OBD-II scanner to the vehicle's diagnostic port.
2. Navigate to the remote start settings and ensure they are activated.
3. Save any changes and disconnect the scanner.

6. Reconnect Battery

Sub-steps:
1. Reconnect the negative battery cable securely.
2. Start the vehicle with the key to ensure the system is functioning.