# Service bulletin SB\-21\-18\-001

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10189010
- Published by NHTSA: 2021\-03\-15
- Manufacturer's number: SB\-21\-18\-001
- Manufacturer's date: 2021\-02\-05
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Some Model 3 and Model Y vehicles may be equipped with refrigerant pressure/temperature \(P/T\) sensors in the heat pump that can fault over time.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189010-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189010-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2020 to 2021 TESLA MODEL 3
- 2020 to 2021 TESLA MODEL Y

## Other bulletins for the same vehicles and component

- [SB2016002R2](/bulletins/10250491.md), 2024-02-20, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). Certain Model 3 vehicles were configured with incorrect shunt resistance values that can affect charging capacity and range performance.
- [SB\-21\-18\-002 R3](/bulletins/10203343.md), 2021-11-08, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. Certain Model 3 and Model Y vehicles may be equipped with refrigerant pressure/temperature \(P/T\) sensors in the heat pump that can fault over time.
- [SB\-20\-18\-001](/bulletins/10178412.md), 2020-08-10, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE. An NVH\-reducing A/C compressor acoustic blanket was added to Model Y on May 26, 2020. Vehicles built before this date are eligible for a retrofit for owners who complain of elevated HVAC noise at the front of the vehicle.

JSON: [/v1/bulletins/10189010](/v1/bulletins/10189010)

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