# Service bulletin T\-TT\-0635\-20

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: 10185775
- Published by NHTSA: 2021\-01\-25
- Manufacturer's number: T\-TT\-0635\-20
- Manufacturer's date: 2020\-12\-10
- NHTSA component: SUSPENSION

## NHTSA's summary

TT: Some 2018\-2021 model year Tundra vehicles may exhibit a front vibration when braking.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185775-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185775-9999.pdf)

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

## Components

Suspension

## Vehicles listed

- 2018 to 2021 TOYOTA TUNDRA

## Other bulletins for the same vehicles and component

- [T\-TT\-0610\-20](/bulletins/10176498.md), 2020-06-22, Service bulletin: SUSPENSION; SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY. TT: Some 2016\-2019 model year Tundra vehicles may experience vibration and noise with light brake application. Rear axle runout may not meet the specification of 0.05 mm \(0.00197 in.\)
- [K0B\_Dealer Daily](/bulletins/10159703.md), 2019-05-13, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SUSPENSION. Dealer Daily Message: \*\*Modified Vehicle Handling Process UPDATE\*\* Certain 2018 ? 2019 Model Year Tacoma and Tundra Millimeter Wave Radar Sensor Handling Procedure for Modified Vehicles Some vehicles may have modifications not authorized or approved by Toyota that make it impossible to perform the remedy for this Special Service Campaign. Toyota does not recommend installing aftermarket, non\-Toyota authorized parts or accessories or Toyota parts not originally intended for the vehicle model and cannot evaluate how those modifications could affect a vehicle's operation. This is especially true for the PCS system, because it uses a camera and radar device that has an adjustment based on the vehicle?s original suspension design. It is best to restore the vehicle to its original condition prior to the remedy being performed. Any cost to do this is the customer?s responsibility. As a result, at this time, if a vehicle has modifications of the type noted below, Toyota does NOT RECOMMEND the remedy be performed with the vehicle in its current modified condition. Toyota cannot determine how modifications not authorized or evaluated by Toyota can affect the alignment of the PCS sensor. Please advise the owner that the vehicle?s special service campaign status will remain open, and the remedy will be performed FREE OF CHARGE when the vehicle is returned to a condition in which the remedy can be made.

JSON: [/v1/bulletins/10185775](/v1/bulletins/10185775)

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