GF54.30-P-2012RT Display Monitoring/Warning Messages Via Multifunction Display, Function

GF54.30-P-2012RT Display Monitoring/warning Messages Via Multifunction Display, Function

Function menu
Starting from the basic screen, the following views can be called up in the central status area using the System Selection pushbutton (S110s3) and the Forward/Back pushbuttons (S110s1):
^ Digital speedometer
^ Service required
^ Tire pressure
^ Check engine oil level

In the multifunction display (A1p13) and starting from the basic display "driving mode" described, various adjustment menus and information menus can be transmitted by changing the display level by means of the system selection button on the multifunction steering wheel.
The information is always displayed in the central status area of the multifunction display.

Only those functions that are actually installed in the vehicle will be displayed:
^ Audio displays
^ Radio
^ CD
^ CC
^ TV tuner (SA)
^ Navigation (special equipment)
^ Distronic (ART) (special equipment)
^ PRESAFE
^ Stationary heater (special equipment) (ECE)
^ Vehicle configuration
^ Telephone display (SA)
^ Trip computer
^ Fault and warning messages

Partitioning the multifunction display

Lower status range:
This status range has two display ranges.
The outside temperature is displayed on the left. In the right-hand range of the line the selected transmission mode and display of the selected drive position or the engaged gear on manual transmission is displayed.

Upper status range:
Navigation is displayed in this range.
Display priority:
The displays and functions appear in relation to their situation and priority. The instrument cluster (A1) differentiates between the primary and secondary priority of each message.

The multifunction display first shows the messages in the sequence of the respective main priority. If there are a number of message of the same high priority, the value of the secondary priority of the messages is used to decide the display sequence. New messages have the highest priority.
After it has been displayed once, the message is entered in the display sequence.

The messages are divided into the following three categories according to their priority.
^ Messages of the highest priority belong to category 1. These messages cannot be acknowledged. When they occur, a brief warning tone is sounded. Any errors of categories 2 and 3 are hidden.
^ Messages of medium priority belong to category 2. The messages can be acknowledged with the trip odometer reset button (A1s3). When they occur, a brief warning tone is sounded. Any faults of category 3 are hidden.
^ Messages of the lowest priority belong to category 3. These messages can be acknowledged with the trip odometer reset button. There is no warning tone.

Fault storage
The messages are stored in 3 roller memories according to their priority:
U roll: This is the directory of all unacknowledged warning messages which are shown in the multifunction display. Displays of the same of a higher priority are displayed once the minimum display time of the preceding message has elapsed.

After the minimum display time for the warning with the lowest secondary priority has elapsed, the error roll starts again with the warning with the highest secondary priority (ring buffer).
W-roll All faults occurring and acknowledged while driving are recorded here. It can be called up at any time in the menu tree in the multifunction display. When the roll is called up, a start screen showing the number of errors that occurred is first displayed, followed by the errors in main priority sequence.
N-roll After disconnecting "circuit 15R", all messages entered in the fault roll are automatically called up in the N-roll in secondary priority sequence.
The number of errors entered in shown in the start screen. The warning buzzer (A1h1) sounds briefly when the start screen is displayed.
The displayed messages must be acknowledged. The N roll stops when all the warnings have been acknowledged.

If there are no messages recorded, or if all the recorded messages have been acknowledged, the multifunction display is switched off after 30 s. If there are still unacknowledged messages present, the shutoff occurs after 2 minutes.
If the N-roll is interrupted by a higher-priority message, it begins again from the start screen.

Some messages (including dynamic curve illumination) are accompanied by the lighting of a warning or indicator lamp. These lamps remain lit until the fault is rectified. This applies even if the corresponding message was acknowledged.

Acknowledging messages
Warning and error messages can be acknowledged automatically or manually. Manual acknowledgment takes place by pressing the steering wheel buttons scroll forward/back button and system selection button or instrument and controls illumination button, dim (A1s5), instrument and controls illumination button, bright (A1s4) and trip odometer reset button.

If the cause of an automatically acknowledgeable message ceases to be applicable, the warning is displayed for the duration of its minimum display time in the multifunction display. In the case of faults which also necessitate the actuation of an indicator lamp, the lamp lights up at the same time as the multifunction display. The lamp remains on as long as the fault persists, regardless of whether the fault display on the multifunction display has already been acknowledged.

Reminder of acknowledged messages
If messages have been acknowledged while driving, these are displayed again as a reminder when "circuit 15R is ON". In this case, current messages, e.g. lights warning, hide this reminder function. If there are no messages, the main screen appears after "Terminal 15R ON".

Display stored error messages
It is possible to scroll through the stored messages when the instrument cluster is activated:
^ Press the system selection button until the "FAULTS" display appears in the multifunction display
^ Scroll through the error messages using the + and - pushbutton, specific function setting and volume control (S111s1). The messages are displayed according to their priority.

Faults in PRESAFE system are displayed as follows as a warning message in the multifunction display
"PRE-SAFE NOT AVAILABLE"
"SEE OPERATOR'S MANUAL"

Example
In order to inform the customer about the low performance of the battery, the message "Electrical consumers switched off" appears in the multifunction display, if the battery control unit (N82) detects a poor condition.

Messages presented in white only have information functions. Consumers that do not impair driving safety are shut off until the overall state of the on-board electrical system has stabilized again.

Amongst other things the consumer shutoff is apparent from the flashing of the function LED of the heated rear window switch (N22s1) or the heated rear window switch (N22/7s1).

Message (white) in instrument cluster
^ "Malfunction - Electrical consumers switched off". The charge level of the battery is too low (consumer shutoff level 1, fault code 9051).

Message (white) in instrument cluster
^ "Malfunction - Electrical consumers switched off".
The battery charge level is very low (consumer shutoff stage 2, fault code 9050).

Message (red) in instrument cluster
^ "Battery/alternator - go to garage + Electrical consumers switched off".
"Circuit 61" not on the CAN data bus.

Message (red) in instrument cluster
^ "Battery/alternator - go to garage + Electrical consumers switched off".

Consumer shutoff:
^ Fault code 9051 (shutoff level 1)
^ Fault code 9050 (shutoff level 2)
^ Fault code 9092 (backup battery < 10.5 V or line to battery control unit interrupted (short circuit).

Consumer shutoff:
The following systems are affected by the consumer shutoff (shutoff level 1, fault code 9051):
^ Blower motor (A32m1) (reduced to 69 %)
^ Steering wheel heater/fanfare horns electronics (A74)
^ left front door inside handle illumination (E17/11)
^ right front door inside handle illumination (E17/12)
^ left rear door inside handle illumination (E17/13)
^ right rear door inside handle illumination (E17/14)
^ left front door entrance and exit lamp (E17/3)
^ right front door entrance and exit lamp (E17/4)
^ left rear door entrance and exit lamp (E17/5)
^ right rear door entrance and exit lamp (E17/6)
^ SRA pump (M5/2)
^ Left front seat cushion ventilation motor group (M18/9)
^ Left front seat backrest ventilation motor group (M18/10)
^ Right front seat cushion ventilation motor group (M18/11)
^ Right front backrest ventilation motor group (M18/12)
^ Driver seat longitudinal adjustment motor (M27/1)
^ Front passenger seat longitudinal adjustment motor(M28/1)
^ Driver-side front seat adjustment control unit, with memory (N32/1)
^ Passenger-side front seat adjustment control unit with memory (N32/2/)
^ Heated rear window (R1)
^ Left front seat heated cushion (R13/1)
^ Right front seat cushion heater element (R13/3)
^ Left front backrest heated cushion (R13/2)
^ Right front backrest seat cushion heater element (R13/4)
^ Left 2nd row seat heated cushion (R13/5)
^ Left 2nd row backrest heated cushion (R13/6)
^ Right 2nd row seat heated cushion (R13/7)
^ Right 2nd row backrest heated cushion (R13/8)

The following systems are affected by the consumer shutoff (shutoff level 2, fault code 9050):
^ Blower motor (reduced to 53 %)
^ Left interior lamp, 1st seat row (N70e4)
^ Right interior lamp, 1st seat row (N70e5)
^ Dome lamp, 3rd seat row (E15/3)
^ right front footwell lamp (E17/15)
^ left front footwell lamp (E17/16)
^ right rear footwell lamp (E17/17)
^ left rear footwell lamp (E17/18)
^ Tailgate hydraulic pump (M51/1)
^ Left electrically adjustable and heated outside mirror (M21/1)
^ Right electrically adjustable and heated outside mirror (M21/2)
^ PTS control unit (N62)
^ Center washer nozzle heater (R2/1)
^ Left heated windshield washer nozzle (R2/2)
^ Right washer nozzle heater (R2/3)
^ Washer nozzle hose heater (R2/11)
^ Front cigar lighter with ashtray illumination (R3)