how to fix the remote start not working on my Volvo XC90 Second Generation (2015-2024)

Volvo XC90 Second Generation (2015-2024)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

503 words

Problem Statement

Learn how to diagnose and fix the remote start issue in your Volvo XC90 (2015-2024). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle battery before performing any electrical repairs

Symptoms

•Remote start button on the key fob is unresponsive
•No engine start or indication when remote start is attempted
•Check engine light illuminated on the dashboard
•Vehicle does not respond to remote start after multiple attempts
•Possible issues with the key fob battery or vehicle battery

Diagnostic Steps

1
Verify that the key fob battery is functional by checking for other remote functions (lock/unlock)
2
Check the vehicle battery voltage to ensure it is adequately charged
3
Scan the vehicle's ECU for any diagnostic trouble codes (DTCs) related to the remote start system
4
Inspect the key fob for physical damage or signs of wear
5
Ensure that the vehicle’s hood and doors are properly closed, as these are safety checks for remote start
6
Test the remote start feature using a second key fob if available

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
•Small flat-head screwdriver
•Battery charger

Parts Required

•Key fob battery (CR2032 or equivalent)
•Vehicle battery (if replacement is necessary)

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Diagnostic Steps

1
Verify that the key fob battery is functional by checking for other remote functions (lock/unlock)
2
Check the vehicle battery voltage to ensure it is adequately charged
3
Scan the vehicle's ECU for any diagnostic trouble codes (DTCs) related to the remote start system
4
Inspect the key fob for physical damage or signs of wear
5
Ensure that the vehicle’s hood and doors are properly closed, as these are safety checks for remote start
6
Test the remote start feature using a second key fob if available

Solution

1. Preparation

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

2. Replace Key Fob Battery

Sub-steps:
- Open the key fob using a small flat-head screwdriver.
- Remove the old battery (CR2032 or equivalent).
- Insert a new battery, ensuring proper polarity.
- Reassemble the key fob.

3. Inspect and Charge Vehicle Battery

Sub-steps:
- Use a multimeter to check the voltage of the vehicle battery; it should read around 12.6 volts for a fully charged battery.
- If the voltage is low, connect a battery charger and charge it fully.
- Clean any corrosion from the battery terminals and ensure a secure connection.

4. Reset Remote Start System

Sub-steps:
- Reconnect the vehicle battery.
- Turn the ignition key to the "ON" position without starting the engine.
- Wait for a few minutes before attempting to use the remote start again.

5. Reprogram the Key Fob (if necessary)

Sub-steps:
- Insert the key into the ignition and turn it to the "ON" position.
- Press the lock button on the key fob to reprogram it to the vehicle.
- Turn the ignition off and test the remote start feature.