# Service bulletins for the 2021 Volvo S90

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.

229 bulletins from NHTSA, as of 2026-10-19.

- [36863.4.0](/bulletins/11036246.md), 2026-08-18, Service bulletin: ELECTRICAL SYSTEM. This is a Technical Journal: DIM Message and DTC IEM P0C0500. 1. Erase the DTC 2. Test drive the vehicle in electrical mode and accelerate until the vehicle reaches a minimum of 30 km/h \(19 mph\). 3. Perform a new VIDA readout If the DTC IEM P0C0500 does not return, do not replace any parts. Release the car to customer.
- [37342.2.3](/bulletins/11036240.md), 2026-08-18, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: iCUP IHU \- Text plus 1 PDF Prior Approval. In most cases, the IHU does not need to be replaced \-In many cases the Infotainment Head Unit \(IHU\) does not need to be replaced and can be retained by following the fault tracing in VIDA.
- [33031.6.0](/bulletins/11033746.md), 2026-06-08, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Text plus 1 .jpg attachment \- If remote control key is not detected by the car and shows message in DIM "Car key not found" or if functions such as lock/unlock are not working, please follow advice for detecting key
- [36496.10.0](/bulletins/11033734.md), 2026-06-08, Service bulletin: POWER TRAIN. This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front drive shafts to the below part numbers.
- [36376.6.0](/bulletins/11033733.md), 2026-06-08, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Text only no attachments \- Before replacing a cell module, make sure the latest BECM software is downloaded. This is important for utilizing the VIDA method described here and receiving the correct cell balancing diagnostics after the replacement.
- [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
- [35526.1.8](/bulletins/11032678.md), 2026-05-14, Service bulletin: ENGINE. This is a Technical Journal: Text plus 2 PDFs and 1 .PNG Oil Consumption test. Perform the test. Follow service procedure\&\#13; Description and Service sections updated to clarify that vehicle reports are not required.\&\#13;
- [37809.1.1](/bulletins/11032671.md), 2026-05-14, Service bulletin: UNKNOWN OR OTHER. This is a TJ text only \- The purpose of this TJ is to be a master reference list to easily identify any components that are on prior approval. This TJ will be regularily updated as items are added or removed from prior approval.\&\#13; Current items under prior approval are listed in the "Service" section
- [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
- [37773.1.2](/bulletins/11031105.md), 2026-04-07, Service bulletin: UNKNOWN OR OTHER. This is a TJ \- Text only no attachments \- If customer experiences an incorrect ambient temperature reading in DIM \(Driver Information Module\) or reduced A/C performance, follow the advice under Service. Please refer to the wiring diagram in VIDA to locate the relevant circuit for the ambient temperature sensor \(component 7/481\) at the passenger door mirror harness.
- [34295.9.0](/bulletins/11031099.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This is a Technical Journal: Text plus 2 attachments 1 PDF and 1 PNG \- High Voltage Battery repairs. Always repair the battery according to the methods in VIDA. This TJ is a guide to the kinds of repairs that can be done instead of a complete HV battery replacement.\&\#13; Parts, methods, and tools are now available to repair almost all faults within the High Voltage Battery.
- [36376.5.1](/bulletins/11031096.md), 2026-04-07, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Text only no attachments \- Before replacing a cell module, make sure the latest BECM software is downloaded. This is important for utilizing the VIDA method described here and receiving the correct cell balancing diagnostics after the replacement.
- [37480.2.0](/bulletins/11031094.md), 2026-04-07, Service bulletin: UNKNOWN OR OTHER. This is a Tech Journal \- Text plus 1 jpeg\-\-\- This Technical Journal is rewritten in its entirety.\&\#13; When the vehicle has 5.0.X software installed, it includes the new Volvo Car UX for both Centre Display and the Driver Display, see attachment TJ\_37480\_1.jpg. After installing the update, follow advice under "Service".\&\#13;
- [35842](/bulletins/11028386.md), 2026-02-05, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Text plus 1 jpg and 1 mp4 file \-\- If there is a strange chafing or creaking noise when turning the steering wheel, follow the advice under Service.
- [36757](/bulletins/11028384.md), 2026-02-05, Service bulletin: ELECTRICAL SYSTEM. This is a Technical Journal: Text plus TJI 528994 \- Charge Lid Hard to open/close. begin with replacing the actuator in the lock mechanism
- [TJ 34498](/bulletins/11028383.md), 2026-02-05, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Text plus TJI\-516730\-1\_1\_0 Headliner, squeak/rattle noise If a squeaking noise can be heard from the headlining around the sun roof, see instructions under Service referring to TJI\-516730\-1\_1\_0
- [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
- [37624](/bulletins/11027187.md), 2026-01-07, Service bulletin: POWER TRAIN. This is a TJ \- Text only no attachments If a decision is taken to replace a cell module and the vehicle has VDN code CK04, please follow information under "Service." f you are replacing a cell module and the vehicle has VDN code CK04, please install the SP listed below before you replace the cell module.\&\#13;
- [36902](/bulletins/11027185.md), 2026-01-07, Service bulletin: STRUCTURE:BODY. This is a TJ \- Text plus 2 jpeg files and 1 mp4 file \- If customer complains of the hood being hard to close or "Open Hood" DIM message, please follow advice under "service". And before replacing any parts, follow the 3 steps in the instructions.\&\#13;
- [37624](/bulletins/11027181.md), 2026-01-07, Service bulletin: POWER TRAIN. This is a TJ \- Text only no attachments If a decision is taken to replace a cell module and the vehicle has VDN code CK04, please follow information under "Service." f you are replacing a cell module and the vehicle has VDN code CK04, please install the SP listed below before you replace the cell module.\&\#13;
- [19245](/bulletins/11027173.md), 2026-01-07, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal. Vehicle type and platform identification.
- [TJ36902.1.0\-2025\-10\-31](/bulletins/11026736.md), 2025-12-22, Service bulletin: STRUCTURE:BODY. This is a TJ \- Text plus 2 jpeg files and 1 mp4 file \- If customer complains of the hood being hard to close or "Open Hood" DIM message, please follow advice under "service". And before replacing any parts, follow the 3 steps in the instructions.
- [TJI VCC\-517278\-1](/bulletins/11026731.md), 2025-12-22, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Prior Approval \- lack of airflow combined with a poor cooling performance follow the advice under service.
- [AC pressure check](/bulletins/11026730.md), 2025-12-22, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Prior Approval \- lack of airflow combined with a poor cooling performance follow the advice under service.
- [TJ34648.5.0\-2025\-10\-29](/bulletins/11026729.md), 2025-12-22, Service bulletin: UNKNOWN OR OTHER. This is a Technical Journal: Prior Approval \- lack of airflow combined with a poor cooling performance follow the advice under service.

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