# Service bulletin SSM75447ATT1

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: 10199032
- Published by NHTSA: 2021\-07\-08
- Manufacturer's number: SSM75447ATT1
- Manufacturer's date: 2021\-06\-29
- NHTSA component: SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

Brake noise and Judder felt through the floor during braking.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199032-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199032-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2021 LAND ROVER DEFENDER
- 2021 LAND ROVER RANGE ROVER
- 2021 LAND ROVER RANGE ROVER SPORT
- 2021 LAND ROVER RANGE ROVER VELAR

## Other bulletins for the same vehicles and component

- [TUCC\_AUG2025\_37](/bulletins/11022472.md), 2025-09-03, Other: SERVICE BRAKES. When pushing the rear brake caliper pistons back during a brake service, the caliper piston dust boot may become twisted or distorted if a twist method is used to retract the piston.
- [SSM76375ATT2 \- 04AUG25](/bulletins/11022424.md), 2025-09-03, Other: SERVICE BRAKES. Rear Brake Caliper Piston Dust Boot Distortion Risk
- [SSM76375ATT1 \- 04AUG25](/bulletins/11022423.md), 2025-09-03, Other: SERVICE BRAKES. Rear Brake Caliper Piston Dust Boot Distortion Risk
- [SSM76375 \- 04AUG25](/bulletins/11022421.md), 2025-09-03, Other: SERVICE BRAKES. Rear Brake Caliper Piston Dust Boot Distortion Risk
- [SSM76375 \- 04AUG25](/bulletins/11022420.md), 2025-09-03, Other: SERVICE BRAKES. Rear Brake Caliper Piston Dust Boot Distortion Risk
- [SFCC\_MAR2025\_20](/bulletins/11016648.md), 2025-04-07, Other: SERVICE BRAKES. There have been several FRED submissions for a customer allegation of brake judder/vibration.
- [SFCC\_MAR2025\_18](/bulletins/11016647.md), 2025-04-07, Other: SERVICE BRAKES. There have been several FRED submissions for a customer allegation of a brake noise concern.
- [SFCC\_MAR2025\_17](/bulletins/11016646.md), 2025-04-07, Other: SERVICE BRAKES. There have been several FRED submissions for a customer allegation of a rear brake warning being illuminated on the instrument cluster.
- [SSM76230ATT](/bulletins/11015329.md), 2025-03-07, Other: SERVICE BRAKES. Electric Park Brake \(EPB\) Switch Inoperable Due To Build\-Up Of Debris
- [SSM76230](/bulletins/11015328.md), 2025-03-07, Other: SERVICE BRAKES. Electric Park Brake \(EPB\) Switch Inoperable Due To Build\-Up Of Debris

JSON: [/v1/bulletins/10199032](/v1/bulletins/10199032)

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