# Service bulletin SB\-20\-33\-001 R1

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: 10174929
- Published by NHTSA: 2020\-05\-11
- Manufacturer's number: SB\-20\-33\-001 R1
- Manufacturer's date: 2020\-04\-24
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

On some Model 3 and Model Y vehicles, the brake caliper bolts may not have been torqued to internal specifications.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174929-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174929-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2020 TESLA MODEL 3
- 2020 TESLA MODEL Y

## Recalls for the same vehicles and component

- [2021318](/recalls/tc/2021318.md), 2021-05-25: Brakes
- [21V387000](/recalls/nhtsa/21V387000.md), 2021-05-25: SERVICE BRAKES, HYDRAULIC:CRITICAL FASTENERS; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

## Other bulletins for the same vehicles and component

- [SB\-26\-33\-001](/bulletins/11033173.md), 2026-06-02, Service bulletin: SERVICE BRAKES. On certain Model 3 vehicles, brake lines may be corroded beyond acceptable limits, which may result in loss of brake fluid. Loss of brake fluid will result in a customer facing alert if the fluid reaches the predetermined level to trigger an alert. Upon customer complaint of a low brake fluid alert, evidence of a brake fluid leak, or a failed periodic roadworthiness inspection, inspect the brake lines. If corrosion is found on any of the brake lines, replace all brake lines on the vehicle with new corrosion\-resistant parts, in one combined repair. NOTE: Due to dual reduncancy, vehicle safety is not impacted by corrosion on the brake lines.
- [SB\-26\-33\-001](/bulletins/11029583.md), 2026-03-04, Service bulletin: SERVICE BRAKES. On certain Model 3 vehicles, brake lines may be corroded beyond acceptable limits, which may result in loss of brake fluid. Loss of brake fluid will result in a customer facing alert if the fluid reaches the predetermined level to trigger an alert. Upon customer complaint of a low brake fluid alert, evidence of a brake fluid leak, or a failed periodic roadworthiness inspection, inspect the brake lines. If corrosion is found on any of the brake lines, replace all brake lines on the vehicle with new corrosion\-resistant parts, in one combined repair. NOTE: Due to dual reduncancy, vehicle safety is not impacted by corrosion on the brake lines.
- [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.
- [SB\-20\-33\-001](/bulletins/10174928.md), 2020-05-11, Service bulletin: SERVICE BRAKES. On some Model 3 and Model Y vehicles, the brake caliper bolts may not have been torqued to internal specifications.

JSON: [/v1/bulletins/10174929](/v1/bulletins/10174929)

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