why does my Genesis G70 IG (2017-2023) key fob not work after battery change?

Genesis G70 IG (2017-2023)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

429 words

Problem Statement

Learn how to troubleshoot and fix a non-working key fob after a battery change for Genesis G70 (2017-2023). Step-by-step guide included.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Avoid using excessive force when opening the key fob to prevent damage.

Symptoms

•Key fob buttons are unresponsive
•Vehicle does not recognize the key fob
•Key fob LED indicator does not light up
•Unable to lock/unlock doors remotely
•Engine will not start using the key fob

Diagnostic Steps

1
Verify the new battery is installed correctly, ensuring proper polarity.
2
Check the battery voltage using a multimeter to confirm it is functional.
3
Inspect the key fob for physical damage, including cracks or corrosion.
4
Re-sync the key fob with the vehicle as per the manufacturer’s instructions.
5
Test the key fob in close proximity to the vehicle to eliminate distance issues.

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

•Small flathead screwdriver
•Multimeter

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Verify the new battery is installed correctly, ensuring proper polarity.
2
Check the battery voltage using a multimeter to confirm it is functional.
3
Inspect the key fob for physical damage, including cracks or corrosion.
4
Re-sync the key fob with the vehicle as per the manufacturer’s instructions.
5
Test the key fob in close proximity to the vehicle to eliminate distance issues.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure you are in a well-lit area to work on the key fob.

2. Inspect Battery Installation

Open the key fob casing using a small flathead screwdriver.
Remove the old battery and replace it with a new battery (usually a CR2032).
Ensure the battery is positioned correctly with the positive (+) side facing the correct direction.

3. Re-sync Key Fob

Sit inside the vehicle with the doors closed.
Insert the key into the ignition and turn it to the ON position (do not start the engine).
Press and hold the LOCK button on the key fob for 5 seconds.
Turn the ignition OFF and then back to the ON position, repeating the process if necessary.

4. Test Key Fob Functionality

Attempt to lock and unlock the doors using the key fob.
Check if the LED indicator lights up when pressing buttons; if not, further inspection may be needed.