- Engine / equipment
- Heat pump refrigerant pressure/temperature sensors: Tesla Model 3 and Model Y
- Period mentioned
- 2020–2021
- Symptoms
- Cabin heating or cooling does not work properly, with refrigerant sensor alerts (for example VCFRONT_a136 to a139, a279, a280 or a452).
- Possible cause described
- According to Tesla bulletin SB-21-18-001 (February 2021, all markets), some Model 3 and Model Y cars with a heat pump have refrigerant pressure/temperature sensors that can fail over time.
- Check for the garage
- If the climate control fails and one of those alerts appears, ask Tesla service to apply the bulletin: they replace all three refrigerant pressure/temperature sensors.
- 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
Cabin heating or cooling failing because of the heat pump refrigerant pressure/temperature sensors (Model 3 and Model Y of 2020–2021)
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?
If the climate control fails and one of those alerts appears, ask Tesla service to apply the bulletin: they replace all three refrigerant pressure/temperature sensors.
What are the symptoms?
Cabin heating or cooling does not work properly, with refrigerant sensor alerts (for example VCFRONT_a136 to a139, a279, a280 or a452).
Which cars and years does it affect?
- Brands
- Tesla
- Engine / equipment
- Heat pump refrigerant pressure/temperature sensors: Tesla Model 3 and Model Y
- Period mentioned
- 2020–2021
Taking it to a garage?
Models with this entry
- Tesla Model 32019–2026
- Tesla Model Y2021–2026
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