# Service bulletin 34521

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: 11011735
- Published by NHTSA: 2024\-12\-10
- Manufacturer's number: 34521
- Manufacturer's date: 2024\-11\-01
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

This is a Technical Journal: Headlamp condensation inside lens \- information/leak test. If the result is not ok \(air leak\), it is ok to replace the headlamp

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011735-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011735-9999.pdf)

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

## Components

Lighting

## Vehicles listed

- 2025 VOLVO EC40
- 2025 VOLVO EX30
- 2025 VOLVO EX40
- 2019 to 2022 VOLVO S60
- 2022 to 2025 VOLVO S60MHEV
- 2019 to 2025 VOLVO S60PHEV
- 2017 to 2022 VOLVO S90
- 2022 to 2025 VOLVO S90MHEV
- 2018 to 2025 VOLVO S90PHEV
- 2019 to 2022 VOLVO V60
- 2019 to 2022 VOLVO V60CC
- 2023 to 2025 VOLVO V60CCMHEV
- 2024 to 2025 VOLVO V60MHEV
- 2019 to 2025 VOLVO V60PHEV
- 2017 to 2022 VOLVO V90CC
- 2022 to 2025 VOLVO V90CCMHEV
- 2024 VOLVO XC40
- 2021 to 2023 VOLVO XC40BEV
- 2025 VOLVO XC40BEV
- 2023 to 2025 VOLVO XC40MHEV
- 2016 to 2022 VOLVO XC60
- 2022 to 2025 VOLVO XC60MHEV
- 2018 to 2025 VOLVO XC60PHEV
- 2016 to 2022 VOLVO XC90
- 2017 to 2018 VOLVO XC90E
- 2023 to 2025 VOLVO XC90MHEV
- 2016 to 2025 VOLVO XC90PHEV
- 2022 to 2025 VOLVO duplicate C40BEV

## Recalls for the same vehicles and component

- [2024005](/recalls/tc/2024005.md), 2024-01-10: Lights And Instruments

## Other bulletins for the same vehicles and component

- [37426.2.0](/bulletins/11037962.md), 2026-10-05, Service bulletin: EXTERIOR LIGHTING. This is a TJ Text only no attachments. \-\-\- If the crystal gear shift knob light stays illuminated after the vehicle is locked and is not in active mode, A fix for this issue is introduced with software version 5.0.5.
- [37774.1.0](/bulletins/11036257.md), 2026-08-18, Service bulletin: EXTERIOR LIGHTING. This is a TJ \- Text plus 1 PDF attachment \- f the headlamp horizontal light aim cannot be adjusted via the set screw, If the horizontal light aim cannot be adjusted because the cogwheel knob is broken, do not replace the entire headlamp. Instead, use the spare part kit part number 32476677 to replace the affected component, please follow the instructions under "Service".
- [37631.3.0](/bulletins/11036250.md), 2026-08-18, Service bulletin: EXTERIOR LIGHTING. This is a TJ \- text only no attachments \- If customer complains of a headlamp error message in DIM, in combination with any of the DTCs stated below, follow advice under "Service".
- [37631.2.0](/bulletins/11033738.md), 2026-06-08, Service bulletin: EXTERIOR LIGHTING. This is a TJ \- text only no attachments \- If customer complains of a headlamp error message in DIM, in combination with any of the DTCs stated below, follow advice under "Service".
- [34521.11.1](/bulletins/11033732.md), 2026-06-08, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Headlamp condensation inside lens \- information/leak test. If the result is not ok \(air leak\), it is ok to replace the headlamp
- [34521.10.0](/bulletins/11031109.md), 2026-04-07, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Headlamp condensation inside lens \- information/leak test. If the result is not ok \(air leak\), it is ok to replace the headlamp
- [34521](/bulletins/11027189.md), 2026-01-07, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Headlamp condensation inside lens \- information/leak test. If the result is not ok \(air leak\), it is ok to replace the headlamp
- [8501](/bulletins/11020437.md), 2025-07-08, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Remote connection, BOMGAR application. Before joining a remote session:\&\#13; •Connect a suitable battery maintainer/charger and verify that the battery voltage indicated in VIDA is between 12.5V and 14.9V.\&\#13; •Connect to the vehicle over a wired connection using a VOE \(Volvo OBD to Ethernet\) adapter and perform a NEW vehicle readout.\&\#13;
- [37235](/bulletins/11016016.md), 2025-03-27, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Changed front fog/cornering lights behavior. This logic of the cornering lights is now changed in the cars with software version 3.3.16 or later
- [8501](/bulletins/11014112.md), 2025-02-11, Service bulletin: EXTERIOR LIGHTING. This is a Technical Journal: Remote connection, BOMGAR application. Before joining a remote session:\&\#13; •Connect a suitable battery maintainer/charger and verify that the battery voltage indicated in VIDA is between 12.5V and 14.9V.\&\#13; •Connect to the vehicle over a wired connection using a VOE \(Volvo OBD to Ethernet\) adapter and perform a NEW vehicle readout.\&\#13;

JSON: [/v1/bulletins/11011735](/v1/bulletins/11011735)

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