# Service bulletin SB\-21\-18\-002\-R6

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: 10226577
- Published by NHTSA: 2022\-11\-28
- Manufacturer's number: SB\-21\-18\-002\-R6
- Manufacturer's date: 2022\-08\-17
- NHTSA component: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10226577-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10226577-9999.pdf)

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

## Components

Electrical system, Hybrid and electric drive

## Vehicles listed

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

## Recalls for the same vehicles and component

- [2024427](/recalls/tc/2024427.md), 2024-07-25: Electrical
- [24V554000](/recalls/nhtsa/24V554000.md), 2024-07-24: ELECTRICAL SYSTEM:SOFTWARE; LATCHES/LOCKS/LINKAGES:HOOD:LATCH
- [24V153000](/recalls/nhtsa/24V153000.md), 2024-02-27: FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
- [24V051000](/recalls/nhtsa/24V051000.md), 2024-01-30: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [23V838000](/recalls/nhtsa/23V838000.md), 2023-12-12: ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:SOFTWARE
- [22V317000](/recalls/nhtsa/22V317000.md), 2022-05-09: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING
- [22V263000](/recalls/nhtsa/22V263000.md), 2022-04-18: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [22V235000](/recalls/nhtsa/22V235000.md), 2022-04-12: ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT
- [22V063000](/recalls/nhtsa/22V063000.md), 2022-02-04: FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
- [22V050000](/recalls/nhtsa/22V050000.md), 2022-02-02: ELECTRICAL SYSTEM:SOFTWARE; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES

## Other bulletins for the same vehicles and component

- [SB\-24\-17\-005](/bulletins/11017591.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM. On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detection performance in low\-light conditions.
- [SB\-24\-17\-005](/bulletins/11013482.md), 2025-02-03, Service bulletin: ELECTRICAL SYSTEM. On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detection performance in low\-light conditions.
- [SB\-24\-17\-005](/bulletins/11008822.md), 2024-10-09, Service bulletin: ELECTRICAL SYSTEM. On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detection performance in low\-light conditions.
- [SB\-24\-17\-005](/bulletins/11008798.md), 2024-10-09, Service bulletin: ELECTRICAL SYSTEM. On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detection performance in low\-light conditions.
- [SB\-24\-17\-005](/bulletins/11008774.md), 2024-10-09, Service bulletin: ELECTRICAL SYSTEM. On certain Model S, Model X and Model Y vehicles, the interior camera requires replacement to mitigate reduced driver attentiveness detection performance in low\-light conditions.
- [SB19\-20\-003\-R3](/bulletins/10247400.md), 2023-12-18, Service bulletin: EXTERIOR LIGHTING; AIR BAGS; ELECTRICAL SYSTEM. On some Model 3 and Model Y vehicles, the Occupant Classification System \(OCS\) signal might be affected by electrical interference in the seat electrical harness, causing the airbag indicator to display on the touchscreen.
- [SB2233006](/bulletins/10214118.md), 2022-06-13, Service bulletin: ELECTRICAL SYSTEM:WIRING; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. Some Model Y vehicles were built without a hydraulic control unit \(HCU\) wake\-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power\-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.
- [SB2233005](/bulletins/10214117.md), 2022-06-13, Service bulletin: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE; ELECTRICAL SYSTEM:WIRING. Some Model Y vehicles were built without a hydraulic control unit \(HCU\) wake\-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power\-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.
- [SB2233004](/bulletins/10213756.md), 2022-06-13, Service bulletin: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); ELECTRICAL SYSTEM. Some Heat Pump Model 3 vehicles were built without a hydraulic control unit \(HCU\) wake\-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power\-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.
- [SB2233003](/bulletins/10213755.md), 2022-06-13, Service bulletin: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); ELECTRICAL SYSTEM. Some Heat Pump Model 3 vehicles were built without a hydraulic control unit \(HCU\) wake\-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power\-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.

JSON: [/v1/bulletins/10226577](/v1/bulletins/10226577)

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