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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10226577
Published by NHTSA2022-11-28
Manufacturer's numberSB-21-18-002-R6
Manufacturer's date2022-08-17
NHTSA componentELECTRICAL 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Hybrid and electric drive

Vehicles listed
TESLA MODEL 32020, 2021
TESLA MODEL Y2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20244272024-07-25. Electrical
24V5540002024-07-24. ELECTRICAL SYSTEM:SOFTWARE; LATCHES/LOCKS/LINKAGES:HOOD:LATCH
24V1530002024-02-27. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
24V0510002024-01-30. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
23V8380002023-12-12. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:SOFTWARE
22V3170002022-05-09. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING
22V2630002022-04-18. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
22V2350002022-04-12. ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT
22V0630002022-02-04. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
22V0500002022-02-02. ELECTRICAL SYSTEM:SOFTWARE; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SB-24-17-0052025-05-02. Service bulletin. 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-24-17-0052025-02-03. Service bulletin. 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-24-17-0052024-10-09. Service bulletin. 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-24-17-0052024-10-09. Service bulletin. 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-24-17-0052024-10-09. Service bulletin. 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-R32023-12-18. Service bulletin. 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.
SB22330062022-06-13. Service bulletin. 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.
SB22330052022-06-13. Service bulletin. 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.
SB22330042022-06-13. Service bulletin. 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.
SB22330032022-06-13. Service bulletin. 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.