my Genesis G70 IG (2017-2023) shakes when I brake, what's wrong

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

522 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 issues in Genesis G70 (2017-2023). 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

•Always disconnect the battery before working on electrical components or brake systems.
•Allow the vehicle to cool before working on brakes to avoid burns.

Symptoms

•Vehicle shakes or vibrates during braking
•Steering wheel vibrates noticeably when brakes are applied
•Increased stopping distance
•Noises such as grinding or squeaking when braking
•Brake pedal feels pulsating or soft

Diagnostic Steps

1
Inspect brake pads for wear and proper installation.
2
Check brake rotors for warping or uneven wear using a dial indicator.
3
Examine calipers for proper operation and any sticking issues.
4
Inspect wheel alignment and tire condition to rule out related issues.
5
Scan for any error codes that may indicate issues with the braking system.

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

•Jack and jack stands
•Lug wrench
•Torque wrench
•Dial indicator
•Brake cleaner
•Basic hand tools (socket set, wrenches)

Parts Required

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

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Diagnostic Steps

1
Inspect brake pads for wear and proper installation.
2
Check brake rotors for warping or uneven wear using a dial indicator.
3
Examine calipers for proper operation and any sticking issues.
4
Inspect wheel alignment and tire condition to rule out related issues.
5
Scan for any error codes that may indicate issues with the braking system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Wear safety gear (gloves and goggles).

2. Remove Wheel and Brake Components

Sub-steps:
1. Loosen lug nuts slightly while the vehicle is on the ground.
2. Lift the vehicle using a jack and secure it with jack stands.
3. Remove the wheel by fully loosening and removing the lug nuts.
4. Remove the brake caliper by unbolting it (typically two bolts) and support it with a wire to avoid strain on the brake line.
5. Remove the brake pads from the caliper bracket.

3. Inspect and Replace Rotors if Necessary

Sub-steps:
1. Use a dial indicator to measure rotor runout; replace if exceeded manufacturer specifications (typically 0.002-0.003 inches).
2. If rotors are warped, remove the caliper bracket and unbolt the rotor from the hub.
3. Clean the hub surface and install new rotors (if needed), ensuring they are torqued to manufacturer specifications (usually around 80-100 ft-lbs).

4. Reassemble Brake Components

Sub-steps:
1. Reinstall brake pads into the caliper bracket.
2. Reattach the brake caliper and tighten bolts to the specified torque (typically around 25-35 ft-lbs).
3. Reinstall the wheel and hand-tighten the lug nuts.

5. Final Steps

Lower the vehicle off the jack stands.
Tighten the lug nuts in a crisscross pattern to the specified torque (typically around 80-100 ft-lbs).
Pump the brake pedal a few times to ensure proper caliper engagement.