# Service bulletin 2021\-02

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: 10188454
- Published by NHTSA: 2021\-03\-30
- Manufacturer's number: 2021\-02
- Manufacturer's date: 2021\-03\-01
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

Potential for Thermal Damage to the LED Bumper Marker Lights. Cracked bumper marker light lens may lead to the ingress of water into the light body that, over time, could result in corrosion and potentially, the formation of a salt bridge across the electrical leads near the PCB inside the light body. The current flow through the salt bridge can generate heat that may lead to potential thermal damage to the light. In the event of damage to the light, any thermal event would self\-extinguish due to the presence of potting material surrounding the inside of the lamp housing. Reading is aware of an isolated instance of a salt\-bridge forming \~\`with a cracked bumper marker light lens.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188454-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188454-9999.pdf)

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

## Components

Lighting

## Vehicles listed

- READING TRUCK BODY SERVICE BODIES

JSON: [/v1/bulletins/10188454](/v1/bulletins/10188454)

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