# Service bulletin T2521

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: 10204429
- Published by NHTSA: 2021\-12\-13
- Manufacturer's number: T2521
- Manufacturer's date: 2021\-11\-30
- NHTSA component: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:ELECTRICAL; ENGINE

## NHTSA's summary

This TRP is being issued to update the high voltage battery inlet temperature sensor on certain BES CM0904 EV 104B units. The temperature sensor is not IP67 rated and may allow water to leak into the connectors and corrode. This TRP authorizes certified repair locations to complete the upfit any time the unit is in for maintenance or repairs with certain restrictions or reimbursements.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204429-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204429-9999.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories, 12\-volt battery

## Vehicles listed

- CUMMINS ELECTRIC VEHICLE ENGINE

JSON: [/v1/bulletins/10204429](/v1/bulletins/10204429)

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