Data from the vehicle that is read and evaluated
This data in detail:
- Fault memory on central gateway module
The central gateway module monitors the vehicle condition, registers if sleep mode is prevented or if the system is woken up when it shouldn't be and sends a message requesting a reset or that terminal 30F is switched off.
- Fault memory and diagnosis request in the terminal control
- Reset or switch off of terminal 30F.
- Reset or Terminal 30F switch-off prevented (preconditions not satisfied)
- Startability limit reached with Terminal 15 or Terminal 30B on.
- Fault entry on automatic switch-off of Terminal 15 or Terminal 30B due to startability limit being reached
- History of last extensions of Terminal 30B after-running period (auxiliary consumers that operate when engine is off)
- History of the last wake-up causes.
- Energy history memory
The energy history memory (NB: do not confuse with the history memory for fault entries) stores various bits of information that can assist in establishing the cause of problems with the vehicle energy system. The stored information of the energy history memory in detail:
- The driving profile of the last 5 weeks
The driving profile is stored in the energy history memory with 6 data records. Each data record contains the following information: Starting time of record the data record, distance travelled in km during recording, number of journeys in different ranges.
A new data record is started as soon as the time difference between the current time and starting time of recording of the current data record is greater than 7 days. This means the time span of the evaluation is usually approx. 35 days if the vehicle was not immobilized for a longer period without being wakened.
When all 6 data records in the data memory are full, the oldest data record is overwritten.
- The maximum number of wake-ups during a rest phase (Terminal R off) within the last 5 weeks
- The driving profile of the last 5 weeks
- Engine control unit or EDME diagnosis requests
The engine control unit or EDME stores various data that is used for energy diagnosis:
- The results of the last 24 closed-circuit current monitoring
- The last registered battery replacement
- The state of charge of the battery for each of the last 5 days
- The kilometer readings from the last 5 days
- Time and duration of the last 4 instances of reducing power consumption or switching off electrical devices
- As of F10 with enhanced intelligent battery sensor, measured data for monitoring battery condition: faulty battery cell detection, remaining capacity
- Fault memory in the engine control unit or EDME
The engine control unit or EDME stores a fault code entry in the event of standby current violation, total discharge and in the event of reduction or switch-off of electrical consumers.
- Fault memory in the light controls
At Terminal R off, the light controls switch the side lights or parking lights off if the measured vehicle voltage falls below 10.6 volts for at least 2 minutes. On cutoff, a fault entry is stored.