my Genesis G70 IG (2017-2023) shakes when braking what could be wrong

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

504 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 shaking during braking 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

•Disconnect the battery before working on electronic brake systems.
•Allow brakes to cool before handling to avoid burns.

Symptoms

•Vehicle shakes or vibrates during braking
•Steering wheel pulsates or shudders when brakes are applied
•Increased stopping distance
•Brake pedal feels unresponsive or spongy
•Unusual noises (squealing or grinding) during braking

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Examine brake pads for thickness and signs of uneven wear.
3
Check wheel lug nut torque to ensure they are properly tightened.
4
Inspect suspension components (control arms, tie rods, and bushings) for wear or damage.
5
Perform a brake fluid quality check to ensure it is not contaminated.

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
•Socket set
•Dial indicator
•Brake cleaner

Parts Required

•New brake rotors (if warped)
•New brake pads (if worn)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Examine brake pads for thickness and signs of uneven wear.
3
Check wheel lug nut torque to ensure they are properly tightened.
4
Inspect suspension components (control arms, tie rods, and bushings) for wear or damage.
5
Perform a brake fluid quality check to ensure it is not contaminated.

Solution

1. Preparation

Gather tools and parts.
Ensure the vehicle is on a level surface and secure it with wheel chocks.
Disconnect the battery if working on electronic brake systems for safety.

2. Inspect and Replace Brake Rotors

Tools Required: Jack and jack stands, lug wrench, torque wrench, dial indicator, brake cleaner.
Remove the wheel using a lug wrench.
Use a dial indicator to check the rotor for run-out and warping. If warping exceeds manufacturer specifications, replace the rotor.
Clean the rotor surface with brake cleaner before installation.

3. Inspect and Replace Brake Pads

Remove the caliper bolts using a socket set and slide the caliper off the rotor.
Inspect the brake pads for wear; replace if they are below the manufacturer’s minimum thickness.
Ensure the caliper slides and pins are lubricated and functioning properly before reinstallation.

4. Reassemble Components

Reinstall the caliper securely over the new brake pads.
Tighten caliper bolts to manufacturer torque specifications.
Reinstall the wheel and torque the lug nuts to the specified values.

5. Test Brake System

Reconnect the battery.
Pump the brake pedal several times to restore brake pressure.
Perform a test drive to check for vibrations and ensure proper braking performance.