# Service bulletin TSB210259\-112920

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: 10204434
- Published by NHTSA: 2021\-12\-13
- Manufacturer's number: TSB210259\-112920
- Manufacturer's date: 2021\-11\-29
- NHTSA component: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of coolant intrusion into the high voltage junction box, through the wiring harness connections, which may cause various fault codes to activate and may disable the vehicle electrification system.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204434-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204434-9999.pdf)

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

## Components

Electrical system, Hybrid and electric drive, High\-voltage battery, Wiring and fuses

## Vehicles listed

- CUMMINS CUMMINS

JSON: [/v1/bulletins/10204434](/v1/bulletins/10204434)

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