Vehicle recallDVSA
Daimler Tourismo, Setra S531DT and Citaro recalled over a safety defect
The EU directive for commercial vehicles with the Euro 6 emissions standard stipulates that the NOx sensor signal is regularly checked for plausibility. The IUPR monitor (In Use Performance Ratio) was defined for this purpose. At a minimum 50% of vehicles in a class must have this monitor be active at least 10% of the possible time. This is not the case for the affected vehicles. Cause Parameter error in data record creation.
Check your product
Only vehicles within the listed VIN ranges or build dates are covered. A franchised dealer can confirm from your VIN.
3 identifiers listed for this notice.
Tourismo
- Build datesThe build or first registration date is on the V5C.
- 01/12/2017 – 31/05/2019
- 01/02/2017 – 31/05/2019
- Manufacturer referenceThe manufacturer’s own campaign number. Quote it to the dealer.
- Ti5421M26358A
Setra S531DT
- Build dates
- 01/07/2018 – 30/06/2019
- Manufacturer reference
- Ti5421M26358A
Citaro
- Build dates
- 01/04/2017 – 30/09/2018
- Manufacturer reference
- Ti5421M26358A
What to do now
The manufacturer has launched a safety recall for Daimler Tourismo, Setra S531DT and Citaro.
- Enter your registration number on the GOV.UK recall checker, or ask a franchised dealer to check the VIN.
- Book the recall work with a franchised dealer for the make. Recall repairs are carried out free of charge.
- Make sure the DVLA has your current address, as recall letters go to the registered keeper.
Why it matters. Manufacturers must report safety defects to the DVSA and contact registered keepers of affected vehicles.
Repairs and costs
You should not pay for a safety recall repair. Book it with a franchised dealer for the make and take your V5C or registration number.
If you have already paid for a repair to fix the same defect, ask the manufacturer whether it will reimburse you.
From the official notice
Published by the Driver and Vehicle Standards Agency (R/2026/056). Quoted as issued.
Summary
The EU directive for commercial vehicles with the Euro 6 emissions standard stipulates that the NOx sensor signal is regularly checked for plausibility. The IUPR monitor (In Use Performance Ratio) was defined for this purpose. At a minimum 50% of vehicles in a class must have this monitor be active at least 10% of the possible time. This is not the case for the affected vehicles. Cause Parameter error in data record creation.
Defect
The EU directive for commercial vehicles with the Euro 6 emissions standard stipulates that the NOx sensor signal is regularly checked for plausibility. The IUPR monitor (In Use Performance Ratio) was defined for this purpose. At a minimum 50% of vehicles in a class must have this monitor be active at least 10% of the possible time. This is not the case for the affected vehicles. Cause Parameter error in data record creation.
Remedy
To remedy this an update software version in engine management (MCM) and exhaust gas aftertreatment (ACM) control units is required.
Models
Tourismo, Setra S531DT, Citaro
Open the DVSA notice
Questions
Why are Daimler Tourismo, Setra S531DT and Citaro being recalled?
The manufacturer has launched a safety recall for Daimler Tourismo, Setra S531DT and Citaro. Manufacturers must report safety defects to the DVSA and contact registered keepers of affected vehicles.
How do I know if my vehicle is affected?
Enter your registration number on the GOV.UK vehicle recall checker or ask a franchised dealer, who can check your VIN against the manufacturer’s campaign. The VIN ranges and build dates published by the DVSA are listed on this page.
What should I do now?
Enter your registration number on the GOV.UK recall checker, or ask a franchised dealer to check the VIN. Book the recall work with a franchised dealer for the make. Recall repairs are carried out free of charge.
Will the repair cost anything?
You should not pay for a safety recall repair. Book it with a franchised dealer for the make and take your V5C or registration number. If you have already paid for a repair to fix the same defect, ask the manufacturer whether it will reimburse you.