- Engine / equipment
- Metal brake lines: Tesla Model 3
- Period mentioned
- 2017–2023
- Symptoms
- Low brake fluid warning, signs of a brake fluid leak or corroded lines that fail the MOT.
- Possible cause described
- According to Tesla bulletin SB-26-33-001 (February 2026, for North America), on some Model 3 cars the brake lines can corrode beyond acceptable limits and leak fluid; the car warns when the level drops below a set point. Tesla states that, thanks to dual redundancy, corrosion of the lines does not affect safety.
- Check for the garage
- With a low brake fluid warning, a leak or an MOT failure for the lines, have all the brake lines inspected: if any is corroded, the bulletin says to replace them all with corrosion-resistant ones in a single repair. With the brake fluid warning on, do not drive on until it has been checked.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Tesla
Corroded brake lines that may leak fluid (Model 3 of 2017–2023)
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
With a low brake fluid warning, a leak or an MOT failure for the lines, have all the brake lines inspected: if any is corroded, the bulletin says to replace them all with corrosion-resistant ones in a single repair. With the brake fluid warning on, do not drive on until it has been checked.
What are the symptoms?
Low brake fluid warning, signs of a brake fluid leak or corroded lines that fail the MOT.
Which cars and years does it affect?
- Brands
- Tesla
- Engine / equipment
- Metal brake lines: Tesla Model 3
- Period mentioned
- 2017–2023
Taking it to a garage?
Models with this entry
- Tesla Model 32019–2026
Other entries for these makes
- Rusty brake discs or a poor contact pattern because the brakes are seldom used (regenerative braking) (Model 3 and Model Y)Tesla
- Brake and stability control alerts at power-on that clear after restarting the car (Model 3 and Model Y of 2020–2022)Tesla
- Brake caliper bolts not tightened to the correct torque (Model 3 and Model Y of 2018–2021, recall SB-21-33-002)Tesla
- Creaking from the front suspension when turning slowly and worn ball joints at the MOT (Model 3 and Model Y)Tesla
- Cabin heating or cooling failing because of the heat pump refrigerant pressure/temperature sensors (Model 3 and Model Y of 2020–2021)Tesla
- Restart alert or a car that will not start because of damaged wiring near connectors X950 and X952 (Model 3 of 2017–2020)Tesla
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