why does my Genesis G70 shake when I brake at high speeds?

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

513 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 braking 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

•Always disconnect the battery before working on the braking system.
•Allow the brakes to cool before handling any components to avoid burns.

Symptoms

•Vibration in the steering wheel during braking
•Pulsating brake pedal feel
•Shaking or wobbling of the entire vehicle
•Increased stopping distances
•Potential noise from brakes, such as grinding or squealing

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for wear and ensure they are properly seated.
3
Assess wheel alignment and balance by performing a visual inspection and using alignment tools.
4
Examine suspension components for wear or damage, including control arms and bushings.
5
Scan for any error codes related to the ABS 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

•OBD-II scanner
•Dial indicator
•Torque wrench
•Socket set
•Jack and jack stands
•Brake grease

Parts Required

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

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for wear and ensure they are properly seated.
3
Assess wheel alignment and balance by performing a visual inspection and using alignment tools.
4
Examine suspension components for wear or damage, including control arms and bushings.
5
Scan for any error codes related to the ABS system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Wear appropriate safety gear (gloves and safety glasses).

2. Lift the Vehicle

Use a jack to lift the front of the vehicle and secure it with jack stands.
Remove the front wheels using a socket wrench.

3. Inspect and Replace Brake Rotors (if warped)

Sub-step 1: Remove the caliper by unscrewing the caliper bolts; support the caliper with a bungee cord (do not let it hang by the brake line).
Sub-step 2: Remove the brake pads by sliding them out of the caliper bracket.
Sub-step 3: Unbolt and remove the rotor from the wheel hub.
Sub-step 4: Install new rotors if they are warped or worn beyond spec. Ensure they are clean and free of oil.
- Tools Required: Torque wrench, socket set, bungee cord.

4. Install New Brake Pads

Sub-step 1: Apply brake grease to the back of the new brake pads to reduce noise.
Sub-step 2: Install the new brake pads into the caliper bracket.
Sub-step 3: Reattach the caliper over the new pads and tighten the caliper bolts to manufacturer specifications.

5. Wheel Alignment and Balancing

After reassembling the brakes, have the wheel alignment checked and adjusted as necessary.
Ensure the wheels are balanced to prevent any shaking during high-speed braking.