why does my Genesis G70 IG (2017-2023) shake when I brake at high speeds?

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

656 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

Discover how to diagnose and fix brake shaking issues in Genesis G70 (2017-2023). Step-by-step guide with symptoms, diagnostic steps, 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 systems.
•Allow the vehicle to cool down before working on the brakes.

Symptoms

•Vehicle shakes or vibrates when braking at speeds above 50 mph
•Steering wheel shakes during braking
•Pulsation felt in the brake pedal
•Uneven wear on brake pads or rotors
•Potential increase in stopping distance
•Noises such as grinding or squeaking when braking

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for thickness and even wear, ensuring they are not worn out.
3
Examine the suspension components (tie rods, control arms) for any signs of damage or wear.
4
Verify wheel alignment and balance using a professional alignment system.
5
Look for loose or damaged wheel bearings by checking for play in the wheel.
6
Scan for any error codes related to the braking system using 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

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

Parts Required

•New brake rotors
•New brake pads
•Suspension components (if any are worn or damaged)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for thickness and even wear, ensuring they are not worn out.
3
Examine the suspension components (tie rods, control arms) for any signs of damage or wear.
4
Verify wheel alignment and balance using a professional alignment system.
5
Look for loose or damaged wheel bearings by checking for play in the wheel.
6
Scan for any error codes related to the braking system using an OBD-II scanner.

Solution

1. Preparation

Tools Required:
- Jack and jack stands
- Lug wrench
- Torque wrench
- Dial indicator
- Brake cleaner
- Basic hand tools (sockets, wrenches)
Ensure the vehicle is in a secure position, on a flat surface, and the ignition is off.

2. Inspect and Replace Brake Rotors

Lift the Vehicle:
- Use the jack to raise the vehicle and secure it with jack stands.
Remove Wheels:
- Use a lug wrench to remove the lug nuts and take off the wheels.
Inspect Rotors:
- Measure rotor thickness using a micrometer. Check for warping with a dial indicator.
- If warped or below the minimum thickness, proceed to replace.
Remove Old Rotors:
- Unbolt the caliper and hang it with a bungee cord (do not let it dangle by the brake line).
- Remove the rotor by unscrewing the retaining screws, if present.
Install New Rotors:
- Clean the new rotors with brake cleaner to remove any protective coating.
- Install the new rotors and secure them with retaining screws.
Reattach Caliper:
- Reinstall the caliper over the rotor and torque the bolts to the manufacturer's specifications.

3. Inspect and Replace Brake Pads

Remove Old Brake Pads:
- Remove the caliper bolts and slide the caliper off the pads.
- Remove the old brake pads from the caliper bracket.
Install New Brake Pads:
- Insert new pads into the caliper bracket.
- Reinstall the caliper over the new pads and torque the bolts to specifications.

4. Check Suspension Components

Inspect for Damage:
- Visually check control arms, tie rods, and bushings for wear or damage.
Replace Worn Parts:
- If any components are damaged, replace them as necessary.

5. Wheel Alignment and Balancing

Professional Alignment:
- Take the vehicle to a certified technician for wheel alignment and balancing to prevent future issues.