why does my Genesis G70 shake when I brake hard

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

468 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. 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

•Allow brakes to cool before working on them.
•Always use jack stands when lifting the vehicle for safety.

Symptoms

•Steering wheel vibrates during hard braking
•Brake pedal pulsates
•Vehicle pulls to one side when braking
•Uneven brake pad wear observed
•Brake warning light illuminated on the dashboard

Diagnostic Steps

1
Inspect brake pads and rotors for wear and damage.
2
Check wheel alignment and tire condition.
3
Scan for any stored error codes using an OBD-II scanner.
4
Assess brake calipers for proper operation and sticking.
5
Measure rotor runout using a dial indicator.

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

•Lug wrench
•Socket set
•Torque wrench
•Jack and jack stands
•OBD-II scanner

Parts Required

•Brake pads
•Brake rotors

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Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.

2. Remove Wheel

Loosen the wheel lug nuts using a lug wrench.
Raise the vehicle using a jack and secure it with jack stands.
Completely remove the lug nuts and wheel.

3. Inspect and Replace Brake Pads and Rotors

Inspect: Check pads for wear indicators and rotors for scoring or warping.
Replace Pads:
- Remove caliper bolts using a socket set.
- Slide the caliper off the rotor and support it using a bungee cord.
- Remove the old pads and install new ones, ensuring they are properly seated.
Replace Rotors:
- Remove the rotor retaining screws (if applicable).
- Slide the rotor off the hub and replace it with a new one.
- Ensure the new rotor is clean and free of contaminants.

4. Reassemble and Torque Components

Reinstall the brake caliper over the new pads and rotor.
Tighten caliper bolts to the manufacturer's specified torque (typically around 25-35 ft-lbs).
Reattach the wheel and hand-tighten the lug nuts.

5. Lower Vehicle and Final Checks

Lower the vehicle from the jack stands.
Use the torque wrench to tighten the lug nuts to the specified torque (typically around 80-100 ft-lbs).
Check brake fluid level and top off if necessary.