why does my Genesis G70 shake when I brake?

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

496 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 vibration issues 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

•Ensure the vehicle is securely lifted and supported before working on the wheels.
•Allow brake components to cool down if the vehicle has been driven recently.

Symptoms

•Vibration felt through the steering wheel when braking
•Brake pedal pulsation
•Uneven wear on brake pads or rotors
•Increased stopping distance
•Noise such as grinding or squeaking when braking

Diagnostic Steps

1
Inspect brake rotors for warping or uneven surfaces using a dial indicator.
2
Check brake pads for uneven wear or damage.
3
Examine the brake calipers for proper operation and any sticking issues.
4
Inspect wheel bearings and suspension components for play or damage.
5
Test tire balance and alignment.

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
•Dial indicator
•Torque wrench
•Brake grease

Parts Required

•Brake rotors (if warped)
•Brake pads (if worn)

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Solution

1. Preparation

Gather required tools and ensure the vehicle is parked on a flat surface.
Wear safety gear including gloves and eye protection.
Disconnect the battery before working on the braking system to prevent any electrical issues.

2. Inspect and Replace Brake Rotors

Sub-steps:
1. Remove the wheel using a socket set to access the brake assembly.
2. Remove caliper bolts and carefully lift the caliper off the rotor.
3. Remove the rotor by unscrewing the retaining screws or pulling it off (if applicable).
4. Inspect the rotor for warping using a dial indicator; if warped beyond specifications, replace the rotor.
5. Install the new rotor, ensuring it is clean and properly seated.

Tools Required: Socket set, dial indicator, torque wrench

3. Inspect and Replace Brake Pads

Sub-steps:
1. Remove the old brake pads from the caliper bracket.
2. Inspect the pad backing for wear indicators; replace if necessary.
3. Apply brake grease to the back of the new pads and install them in the caliper bracket.
4. Reinstall the caliper over the new pads and torque the caliper bolts to the manufacturer’s specifications.

Tools Required: Torque wrench, brake grease

4. Reassemble and Test

Sub-steps:
1. Reinstall the wheel and hand-tighten the lug nuts.
2. Lower the vehicle and torque the lug nuts in a star pattern to the specified value.
3. Reconnect the battery and pump the brake pedal to seat the pads.

Tools Required: Torque wrench