Hard Brake Pedal - Possible Brake Booster or Vacuum Pump Issue
The brake pedal is consistently hard, indicating a lack of power assist. In a Tesla Model 3, this is often due to a failed brake booster vacuum pump, a vacuum leak, or a faulty brake booster. This reduces braking effectiveness and increases stopping distance.
Diagnosis Details
Possible Causes
Failed brake booster vacuum pump (common on early Model 3s)
Vacuum leak in the brake booster system (hose or check valve)
Faulty brake booster diaphragm or internal failure
Related OBD-II Codes
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What You Should Do
Have the vehicle inspected immediately.
A technician should check the brake booster vacuum pump operation, inspect vacuum hoses for leaks, and test the brake booster function.
Do not drive unless absolutely necessary.
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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.