# Service bulletin TT 63 21 01

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: 10194521
- Published by NHTSA: 2021\-06\-03
- Manufacturer's number: TT 63 21 01
- Manufacturer's date: 2021\-05\-28
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

## NHTSA's summary

Radar Sensor Cover service information

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194521-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194521-9999.pdf)

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

## Components

Engine, Cooling system, Radiator

## Vehicles listed

- 2021 VOLKSWAGEN ID.4

## Other bulletins for the same vehicles and component

- [V191701202254810](/bulletins/10236610.md), 2023-06-06, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. Introduce new engine coolant compatible with all models and all model years.

JSON: [/v1/bulletins/10194521](/v1/bulletins/10194521)

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