Daimler Truck Unimog U 5023 and Unimog U 4023 recall: Measure hardness of bearing bushing on longitudinal frame member for steering gear bearing
- What's wrong
- As part of our continuous quality monitoring we have found that the bearing bushing of the steering gear on the frame support may tear off on the specified Daimler Truck UNIMOG vehicles of the UHE and FGA models. The cause is the possible use of…
- What to do
- Contact a Daimler Truck dealer to book the free repair. On the potentially affected vehicles the material quality of the bearing bushings must be checked and the component must be replaced in the event of abnormalities.
What’s wrong
As part of our continuous quality monitoring we have found that the bearing bushing of the steering gear on the frame support may tear off on the specified Daimler Truck UNIMOG vehicles of the UHE and FGA models. The cause is the possible use of the wrong steel material during the manufacturing of the bearing bushing at our supplier. The use of the wrong steel material for the bearing bushing could lead to embrittlement of the weld seams and consequently tearing of the bearing bushing.
The fix
On the potentially affected vehicles the material quality of the bearing bushings must be checked and the component must be replaced in the event of abnormalities.
Vehicles affected
| Model | Built from | Built to | Vehicles |
|---|---|---|---|
| Unimog U 5023 | 4 Feb 2022 | 19 Jul 2022 | 1 |
| Unimog U 4023 | 2 Feb 2023 | 3 Feb 2023 | 1 |
| Unimog U 5023 | 1 Jan 2023 | 3 Mar 2023 | 1 |
| Unimog U 5023 | 1 Jun 2023 | 4 Aug 2023 | 1 |
| Unimog U 4023 | 1 Jul 2023 | 18 Aug 2023 | 1 |
| Unimog U 5023 | 1 Jun 2023 | 1 Sep 2023 | 1 |
How to check your vehicle
Use the official DVSA checker with your registration number to see if your exact vehicle is included. If it is, the manufacturer should have written to the registered keeper. The repair is free, even if you bought the vehicle second-hand.
Updated 12 November 2025. This page summarises an official notice. Details can change – always follow the official notice.