how to troubleshoot rear lights not working in my Genesis G70 IG (2017-2023)

Genesis G70 IG (2017-2023)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

532 words

Problem Statement

Learn how to troubleshoot and fix rear lights not working in Genesis G70 IG (2017-2023). 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 avoid shorts.

Symptoms

•Rear lights do not illuminate when headlights are on
•Brake lights are non-functional
•Turn signals in the rear are not working
•Dashboard warning light for rear lights may be illuminated
•Fuses related to rear lighting may be blown

Diagnostic Steps

1
Inspect the rear light bulbs for any signs of damage or burnout.
2
Check the fuse box for blown fuses related to rear lights and replace if necessary.
3
Use an OBD-II scanner to check for any relevant error codes.
4
Verify the operation of the light switch and ensure it is functioning correctly.
5
Inspect wiring and connectors for any signs of corrosion, damage, or loose connections.
6
Test the voltage at the rear light sockets using a multimeter.

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
•Socket set
•Phillips screwdriver
•Fuse puller or pliers

Parts Required

•Replacement rear light bulbs
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the rear light bulbs for any signs of damage or burnout.
2
Check the fuse box for blown fuses related to rear lights and replace if necessary.
3
Use an OBD-II scanner to check for any relevant error codes.
4
Verify the operation of the light switch and ensure it is functioning correctly.
5
Inspect wiring and connectors for any signs of corrosion, damage, or loose connections.
6
Test the voltage at the rear light sockets using a multimeter.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface.
Disconnect the negative battery terminal to prevent any electrical issues.

2. Inspect and Replace Bulbs

Tools Required: Socket set, Phillips screwdriver
Remove the rear light assembly by unscrewing the retaining screws.
Pull the rear light assembly out gently.
Check the bulbs for any signs of damage; replace any burned-out bulbs with new ones (ensure they match the specifications).

3. Check and Replace Fuses

Tools Required: Fuse puller or pliers
Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse associated with the rear lights using the fuse diagram.
Remove the fuse and inspect it for continuity; replace with the same amperage if blown.

4. Inspect Wiring and Connectors

Visually check the wiring harness leading to the rear lights for damage or wear.
Disconnect and inspect connectors for corrosion; clean them with electrical contact cleaner if necessary.
Repair any damaged wires using appropriate splicing techniques and insulating them with electrical tape.

5. Test Voltage at Sockets

Tools Required: Multimeter
Reconnect the battery terminal.
Set the multimeter to the DC voltage setting.
With the headlights on, probe the rear light socket to check for voltage (should be around 12V); if no voltage is present, trace back to the switch or wiring.