Technical Service Bulletin 08-354-25 — 2026 JEEP WAGONEER S
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | 08-354-25 |
| Manufacturer | |
| Vehicle | 2026 JEEP WAGONEER S |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
Security Gateway Module (SGW) Software Update The following software enhancements are available: ● Diagnostic Trouble Code (DTC) U3033-00 - Control Module Security Certificate Missing/Invalid and U3033-01 - Control Module Security Certificate Missing/Invalid - General Electrical Failure are both active or stored and cannot clear. This DTC will not turn on the Malfunction Indicator Light (MIL). ● If a Firmware Over The Air (FOTA) message appears specifically directing the customer to service OR repeated FOTA events are not being completed, then a manual flash is required for the SGW update. ● SGW module is not responding to diagnostics and is showing offline. This bulletin involves flashing the SGW to the latest software level in the case that the FOTA did not function.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2026 JEEP WAGONEER S
S2623000007
ELECTRICAL SYSTEM
S2609000002
ENGINE
108937
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL