how to fix Honda Accord remote start not working on cold days

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

632 words

Problem Statement

Learn how to diagnose and fix the remote start issue on Honda Accord during cold days. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle battery before working on electrical systems to avoid shorts or shocks.

Symptoms

•Remote start fails to engage on cold days
•Vehicle does not respond to remote start command
•Dashboard lights flicker briefly when attempting remote start
•Engine cranks but does not start
•Check engine light may illuminate intermittently

Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter to ensure it is within the operational range.
2
Inspect the vehicle battery for proper charge and health, particularly in cold weather conditions.
3
Scan for error codes using an OBD-II scanner to identify any potential issues with the engine or electrical systems.
4
Verify the operation of the remote start system's antenna and wiring for any visible damage or disconnections.
5
Test the temperature sensor for the remote start system to ensure it is functioning correctly and not preventing start due to low temperature.
6
Check the vehicle's security system to ensure it is not preventing the remote start from engaging.

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

•OBD-II scanner
•Multimeter
•Screwdriver set
•Wire connectors
•Socket set

Parts Required

•Key fob battery
•Vehicle battery (if needed)
•Temperature sensor (if found faulty)

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Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter to ensure it is within the operational range.
2
Inspect the vehicle battery for proper charge and health, particularly in cold weather conditions.
3
Scan for error codes using an OBD-II scanner to identify any potential issues with the engine or electrical systems.
4
Verify the operation of the remote start system's antenna and wiring for any visible damage or disconnections.
5
Test the temperature sensor for the remote start system to ensure it is functioning correctly and not preventing start due to low temperature.
6
Check the vehicle's security system to ensure it is not preventing the remote start from engaging.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure that the vehicle is parked on a level surface and the keys are removed from the ignition.

Tools Required:

OBD-II scanner
Multimeter
Screwdriver set
Wire connectors
Socket set

2. Battery Check

Sub-steps:
1. Use the multimeter to test the key fob battery voltage; replace it if below 3V.
2. Open the vehicle hood and check the vehicle battery terminals for corrosion or loose connections.
3. Use the multimeter to measure the vehicle battery voltage; it should read above 12.6V when fully charged.

3. Scan for Codes

Sub-steps:
1. Connect the OBD-II scanner to the vehicle's diagnostic port.
2. Turn the ignition to the "ON" position without starting the engine.
3. Follow the scanner's prompts to retrieve error codes and note any related to the remote start or engine management systems.

4. Inspect Wiring and Antenna

Sub-steps:
1. Locate the remote start system's antenna, usually mounted on the windshield or rearview mirror.
2. Check for any loose or damaged wiring connections leading to the antenna.
3. Ensure the antenna is securely mounted and not obstructed.

5. Test Temperature Sensor

Sub-steps:
1. Locate the temperature sensor connected to the remote start module.
2. Use a multimeter to check for proper resistance values at various temperatures; consult the service manual for specifications.
3. Replace the sensor if it is out of specification.

6. Security System Check

Sub-steps:
1. Verify that the vehicle's security system is not in an active state that prevents remote starting (e.g., alarm is disarmed).
2. Consult the vehicle's service manual to reset or reprogram the security system if necessary.