# Service bulletin 37897.1.0

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: 11036258
- Published by NHTSA: 2026\-08\-18
- Manufacturer's number: 37897.1.0
- Manufacturer's date: 2026\-07\-28
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

This is a TJ \- Text Plus 1 attachment \- If DTC HCML/HCMR B199F56 and/or B19A356 are set after a software download, the headlamp parameter values may have been lost. Follow instruction under service.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036258-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036258-9999.pdf)

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

## Components

Lighting

## Trouble codes named

B199F, B19A3

## Vehicles listed

- 2027 VOLVO EX60

## Other bulletins for the same vehicles and component

- [37911.1.0](/bulletins/11037304.md), 2026-09-14, Service bulletin: EXTERIOR LIGHTING. This is a TJ \- Text only \- no attachments \- If any unit is not responding in the Network Topology before PDS upgrade, If the car is still on Factory Software, the VIDA diagnostic script "Disconnect main battery" to perform the low\-voltage system power down will not work. It is required to install SP 80082324 under manual order to complete the low\-voltage system power down. follow advice under Service.

JSON: [/v1/bulletins/11036258](/v1/bulletins/11036258)

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