NHTSA Service Bulletin 11032018: 2026 Mazda Cx-5
Official manufacturer communication context for 2026 Mazda Cx-5, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
MDARS II Record on Behavior (RoB codes). DESCRIPTION X-CODES Record on Behavior (RoB) In the new CX-5, only certain control modules use Record on Behavior (RoB). (Some modules, such as the 7G transmission, record control information as Operation History (DID) instead of RoB.) DTC Format Change Some Diagnostic Trouble Codes (DTCs) have been expanded from 5 digits to 12 digits. Example: Current code: U2701:89-A0 New code: XU2050:55-B0 Display on MDARS II Some DTCs are displayed on MDARS II health check as shown in the table below. Meaning of the X Prefix The X in the upper digit (first character) of the DTC means: It is not an error; it is just information. to assist with diagnostic troubleshooting.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 11032018?
MDARS II Record on Behavior (RoB codes). DESCRIPTION X-CODES Record on Behavior (RoB) In the new CX-5, only certain control modules use Record on Behavior (RoB). (Some modules, such as the 7G transmission, record control information as Operation History (DID) instead of RoB.) DTC Format Change Some Diagnostic Trouble Codes (DTCs) have been expanded from 5 digits to 12 digits. Example: Current code: U2701:89-A0 New.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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