Scheduled maintenance indicator (THAT)
Note. The scheduled maintenance due date indicator informs about the OPTIMAL maintenance period and its readings are not related to the level of engine oil.
Note. If the battery is disconnected, then the parking time of the car is not included in the countdown of the scheduled maintenance period - to maintain the frequency of routine maintenance procedures, this period of time must be taken into account.
Information about the timing of the scheduled maintenance is displayed in the odometer reading field of the digital display built into the dial of the speedometer:
1 - Button to switch the display to odometer mode
Approximately one month before the due date of the next maintenance, with the ignition on, the value of the remaining mileage or time is displayed in the odometer field of the digital display of the speedometer (in days) until the next maintenance procedure is performed (see illustration 2.2).
At the same time, the indication 1000 means that the scheduled maintenance should be completed after 1000 km, and 10 - after 10 days. The data output format is determined by the operating conditions of the vehicle.
Switching the display to the odometer mode occurs automatically after 10 seconds, or by pressing the button (1).
If the maintenance period is overdue, the indicator starts to work in a flashing mode, in addition, a minus sign is displayed in front of the digital data.
It is also possible to output service readings manually, for which you must first activate the instrument cluster, and then press the button twice within 1 second (1). Switching the display to the odometer mode, as before, occurs automatically after 10 seconds, or by pressing the same button.
Scheduled maintenance due date indicator switches off automatically after 10 s or goes out when the button is pressed (1).
The indicator is reset at a Mercedes-Benz workshop where scheduled maintenance was performed.
If necessary, the indicator can be reset on its own by the owner of the car: Turn the key in the ignition switch to position 2 and immediately press the button twice within 1 second (1).
The last indication of the due date of the scheduled maintenance is displayed in the counter of the total distance traveled.
Turn the key in the steering wheel lock to position 0 for approximately 10 seconds.
Click the button (1) and keep pressed. Turn the key in the steering wheel lock to position 2. The button (1) continue to hold down, the display screen will remain illuminated indication of the old period of the previous service, then, approximately 10 seconds after the beep, the period of the next maintenance will be displayed, - release the button (1).
If the due date display is accidentally reset, the function can be reactivated at a Mercedes-Benz workshop.
The amount of mileage remaining before the next maintenance is determined by the driving style and lies in the range from 15,000 to 22,500 km (365 ÷ 730 days). An economical driving style at medium engine speeds and the refusal to travel short distances contribute to its increase.
The schedule for the current maintenance of the car is presented in Section Schedule of ongoing maintenance.