why does my Genesis G70 shake when I brake

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

501 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix brake shaking in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Ensure the vehicle is securely supported on jack stands before working underneath.

Symptoms

•Shaking or vibrating in the steering wheel during braking
•Pulsation felt in the brake pedal
•Uneven tire wear
•Noise emanating from the brakes (squeaking or grinding)
•Increased stopping distance

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a runout gauge.
2
Check brake pads for thickness and signs of uneven wear.
3
Examine tire balance and alignment using a wheel alignment machine.
4
Look for any loose components in the suspension system, including control arms and bushings.
5
Scan for any error codes related to the brake system with an OBD-II scanner.

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

•Socket set
•Runout gauge
•Caliper
•Brake pad spreader
•Wheel alignment machine

Parts Required

•Brake rotors
•Brake pads

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a runout gauge.
2
Check brake pads for thickness and signs of uneven wear.
3
Examine tire balance and alignment using a wheel alignment machine.
4
Look for any loose components in the suspension system, including control arms and bushings.
5
Scan for any error codes related to the brake system with an OBD-II scanner.

Solution

1. Preparation

Gather tools and parts.
Ensure the vehicle is on a flat surface and safely supported with jack stands.
Disconnect the battery for safety.

2. Inspect and Replace Brake Rotors

Remove the wheel using a socket set.
Remove the brake caliper by unbolting it from the bracket. Hang it securely with a bungee cord to avoid stress on the brake line.
Remove the brake pads from the caliper bracket.
Measure the rotor thickness and check for warping using a caliper or runout gauge.
If warped or below the minimum thickness, replace the rotors.
- Tools Required: Socket set, runout gauge, caliper
- Safety Warning: Ensure caliper does not hang from brake line.

3. Inspect and Replace Brake Pads

If brake pads show uneven wear or are below specifications, replace them.
- Remove the caliper bracket if necessary.
- Use a brake pad spreader to compress the caliper piston before installing new pads.
Install the new pads ensuring they are seated correctly in the caliper bracket.
- Tools Required: Brake pad spreader, socket set

4. Check and Adjust Wheel Alignment

After replacing brake components, check wheel alignment using an alignment machine.
Adjust as necessary to ensure proper alignment.
- Tools Required: Wheel alignment machine

5. Reassemble and Test

Reattach the brake caliper and wheel.
Lower the vehicle and reconnect the battery.
Pump the brake pedal to ensure proper brake function before driving.