how to fix the remote start not working on my Toyota Camry XV50 (2012-2017)

Toyota Camry XV80 (2025-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

585 words

Problem Statement

Learn how to diagnose and fix remote start issues in Toyota Camry XV50 (2012-2017). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electronic systems to prevent short circuits or electrical shock.

Symptoms

•Remote start button does not respond
•Engine does not crank or start when using the remote
•"Key not detected" message appears on the dashboard
•Remote key fob battery is low or dead
•Other electronic features (e.g., locks, lights) work correctly from the remote

Diagnostic Steps

1
Check the battery level of the remote key fob.
2
Verify the vehicle's security system status to ensure it is not in "Valet" mode.
3
Inspect the vehicle's fuse box for blown fuses related to the remote start system.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the engine or security system.
5
Confirm whether the hood is securely closed, as some systems prevent remote start if the hood is ajar.
6
Test the remote start feature with a different 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

•OBD-II scanner
•Multimeter
•Small screwdriver
•Fuse puller or needle-nose pliers

Parts Required

•CR2032 battery
•Replacement hood switch (if faulty)
•Replacement fuses (if needed)

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Diagnostic Steps

1
Check the battery level of the remote key fob.
2
Verify the vehicle's security system status to ensure it is not in "Valet" mode.
3
Inspect the vehicle's fuse box for blown fuses related to the remote start system.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the engine or security system.
5
Confirm whether the hood is securely closed, as some systems prevent remote start if the hood is ajar.
6
Test the remote start feature with a different key fob if available.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a well-ventilated area.
Disconnect the battery before working on electronic systems.

2. Check and Replace Key Fob Battery

Tools Required: Small screwdriver, CR2032 battery (if replacement is needed).
Open the key fob using a small screwdriver.
Remove the old battery and check for corrosion or damage.
Install a new CR2032 battery, ensuring the positive side is facing the correct direction.
Reassemble the key fob and test the remote start feature.

3. Inspect and Replace Fuses

Tools Required: Fuse puller or needle-nose pliers.
Locate the fuse box under the dashboard or hood.
Check the fuse associated with the remote start system (refer to the owner's manual for exact location).
If a fuse is blown, replace it with a new one of the same amperage rating.

4. Reset Security System

Tools Required: None.
Ensure the vehicle is off and all doors are closed.
Insert the key into the ignition and turn it to the "On" position without starting the engine.
Leave it in this position for 10 minutes until the security light on the dashboard turns off.
Turn the ignition off and then try the remote start feature again.

5. Check Hood Switch

Tools Required: Multimeter.
Locate the hood switch, usually found near the latch assembly.
Use a multimeter to check for continuity when the hood is closed.
If the switch is faulty, replace it with a new one.