Soft Brake Pedal During Hard Braking - Tesla Model Y 2021
The brake pedal feels soft or spongy when applying hard braking, indicating a potential issue with the brake hydraulic system or brake booster. This can significantly reduce stopping power and poses a safety risk.
Diagnosis Details
Possible Causes
Air in the brake fluid lines (contaminated or low brake fluid)
Brake fluid leak (master cylinder, caliper, or brake line)
Faulty brake booster or vacuum pump (Tesla uses an electric brake booster)
Worn brake pads or rotors causing excessive pedal travel
Related OBD-II Codes
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What You Should Do
Do not drive the vehicle.
Have it towed to a Tesla Service Center or a qualified EV repair shop.
A technician should inspect brake fluid level and condition, check for leaks, bleed the brake system, and test the brake booster and master cylinder.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.