Brake manager The cooling water temperature is over the critical value or the temperature value is invalid.
|  | Description
|  | Effects on the driving operation
|  | Possible causes
|  | Place of action
|  | Instruction
|  | Setting conditions of the event
|  | Testing conditions of the event
|  | Final function check
Description Retarder disruption because of inadmissibly high cooling water temperature Effects on the driving operation No retarder operation. Possible causes Cooling water temperature inadmissibly high. (The temperature increase can be caused by the retarder but also by a high engine load.) Place of action No description available. Instruction Check transmission oil cooling circuit. Contact vehicle manufacturer if necessary. Setting conditions of the event No description available. Testing conditions of the event No description available. Final function check If the defective component cannot be clearly identified, you should try to reproduce the fault: Reinstall the component in the vehicle. Test function. After the fault has been eliminated, the following steps have to be carried out: Conduct a test drive with function check. Read the fault memory Check transmission for leaks. Perform a final visual inspection. These steps are necessary to ensure the entire vehicle functions correctly.
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