# Service bulletin 34521.10.0

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: 11031109
- Published by NHTSA: 2026\-04\-07
- Manufacturer's number: 34521.10.0
- Manufacturer's date: 2026\-03\-21
- 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/2026/MC-11031109-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031109-9999.pdf)

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

## Components

Lighting

## Vehicles listed

- 2022 to 2024 VOLVO C40BEV
- 2025 VOLVO C40BEV
- 2025 to 2026 VOLVO EC40
- 2025 to 2026 VOLVO EX30
- 2026 VOLVO EX30CC
- 2025 VOLVO EX40
- 2025 to 2026 VOLVO EX90
- 2019 to 2022 VOLVO S60
- 2022 to 2025 VOLVO S60MHEV
- 2019 to 2025 VOLVO S60PHEV
- 2017 VOLVO S90
- 2022 to 2026 VOLVO S90MHEV
- 2018 to 2026 VOLVO S90PHEV
- 2019 to 2022 VOLVO V60
- 2019 to 2022 VOLVO V60CC
- 2023 to 2026 VOLVO V60CCMHEV
- 2023 to 2026 VOLVO V60CCPHEV
- 2024 to 2025 VOLVO V60MHEV
- 2026 VOLVO V60MHEV
- 2019 to 2025 VOLVO V60PHEV
- 2026 VOLVO V60PHEV
- 2017 to 2021 VOLVO V90
- 2022 VOLVO V90
- 2017 to 2022 VOLVO V90CC
- 2022 to 2026 VOLVO V90CCMHEV
- 2019 to 2024 VOLVO XC40
- 2021 to 2026 VOLVO XC40BEV
- 2023 to 2025 VOLVO XC40MHEV
- 2018 to 2022 VOLVO XC60
- 2022 to 2026 VOLVO XC60MHEV
- 2018 to 2026 VOLVO XC60PHEV
- 2016 to 2022 VOLVO XC90
- 2017 to 2018 VOLVO XC90E
- 2023 to 2025 VOLVO XC90MHEV
- 2016 to 2026 VOLVO XC90PHEV

## Recalls for the same vehicles and component

- [2025056](/recalls/tc/2025056.md), 2025-02-07: Lights And Instruments
- [25V071000](/recalls/nhtsa/25V071000.md), 2025-02-07: ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES
- [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".
- [37571.6.0](/bulletins/11034991.md), 2026-07-14, Service bulletin: EXTERIOR LIGHTING. This is a TJ Text only no attachments \- This TJ is a complement to the fault tracing in VIDA. If customer complains of intermittent DIM message in combination with DTC HCML/R \- B180292/B180392, follow advice under "Service".Pay attention to which side of the car the DTC refers, both headlamps should not be replaced by default.
- [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
- [37571.5.0](/bulletins/11032674.md), 2026-05-14, Service bulletin: EXTERIOR LIGHTING. This is a TJ Text only no attachments \- This TJ is a complement to the fault tracing in VIDA. If customer complains of intermittent DIM message in combination with DTC HCML/R \- B180292/B180392, follow advice under "Service".Pay attention to which side of the car the DTC refers, both headlamps should not be replaced by default.
- [37571](/bulletins/11028393.md), 2026-02-05, Service bulletin: EXTERIOR LIGHTING. This is a TJ Text only no attachments \- If customer complains of intermittent DIM message in combination with DTC HCML/R \- B180292/B180392, follow advice under "Service".
- [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
- [37571](/bulletins/11027179.md), 2026-01-07, Service bulletin: EXTERIOR LIGHTING. This is a TJ Text only no attachments \- If customer complains of intermittent DIM message in combination with DTC HCML/R \- B180292/B180392, follow advice under "Service".

JSON: [/v1/bulletins/11031109](/v1/bulletins/11031109)

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