GF54.30-P-2001G Control/Warning Messages, Function
GF54.30-P-2001G Control/Warning Messages, Function
MODEL 463.306 /336 /346 up to 31.5.12 as of Model Year 2011 /YoM 10
MODEL 463.202 /222 /236 /237 up to 31.5.12 as of Model Year 2009 /YoM 08
MODEL 463.247 /248 /249 /254 up to 31.8.08 as of Model Year 2007
Model year 07.5, modification year 07
MODEL 463.270 /271 /303 /340 /341 up to 31.5.12 as of Model Year 2007
Model year 07.5, modification year 07
1 Flashing cycle
2 Active high beam
3 Brake fluid level
4 Parking brake status
5 Seat belt buckle status
6 System/warning messages from restraint systems control unit
7 Intervention of antilock brake system (ABS)
8 Status of Electronic Stability Program (ESP(R))
9 Status of motor electronics
10 Active low beam
11 Tire pressure (for model 463.237/249/271 and model 463.202/222/236/248/270/ 303/306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
12 Trailer recognition and trailer lighting status (with code (Q55) Trailer hitch ball head, low reinforced)
13 Status of outside mirror turn signal lamp
14 Coolant temperature signal
15 Audio information, communication information and navigation information
16 Exterior lights defective signal
17 Fuel level sensor signal
18 System/warning messages from AdBlue(R) control unit (for model 463.306/336/346 with engine 642.886)
A1 Instrument cluster
A2 Radio (with code (EF5) MB Audio 20 CD radio)
A40/3 COMAND operating, display and controller unit (with code (ZU8) USA version, with code (ZJ1) Japan version or with code (EU1) COMAND, APS)
A69/1 Left front tire pressure sensor (for model 463.237/249/271 and model 463.202/222/236/248/270/303/ 306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
A69/2 Right front tire pressure sensor (for model 463.237/249/271 and model 463.202/222/236/248/270/303/ 306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
A69/3 Left rear tire pressure sensor (for model 463.237/249/271 and model 463.202/222/236/248/270/303/ 306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
A69/4 Right rear tire pressure sensor (for model 463.237/249/271 and model 463.202/222/236/248/270/303/ 306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
B4 Fuel level sensor
N2/7 Restraint systems control unit
N3/9 CDI control unit (with diesel engine)
N3/10 ME-SFI [ME] control unit (with gasoline engine)
N10/1 Front signal acquisition and actuation module (SAM)
N10/2 Rear signal acquisition and actuation module (SAM)
N28/1 Trailer recognition control unit (with code (Q55) Trailer hitch ball head, low reinforced)
N30/4 ESP control unit
N69/1 Door control module front left
N69/2 Door control module front right
N88 Tire pressure monitor control unit (with model 463.237/249/271 and model 463.202/222/236/248/270/ 303/306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
N118/5 AdBlue(R) control unit (for model 463.306/336/346 with engine 642.886)
S68/3 Left front seat belt buckle restraint systems switch
S68/4 Right front seat belt buckle restraint systems switch
CAN B Interior CAN
CAN C Drive train CAN
CAN I Drive train sensor CAN
Control/warning messages, general
The instrument cluster indicator and warning messages notify the driver about the current states of the systems installed in the vehicle.
Various alternatives are available to the instrument cluster for the output of messages:
- Visual indicator/warning messages
- Multifunction display (A1p13)
- Indicator/warning lamps
- Acoustic indicator/warning messages
The acoustic signals are generated as follows:
- Actuation of warning buzzer (A1h1): Warning tone with various frequencies
- Actuation of audible turn signal indicator (A1h2): Turn signal knocking
The messages output in the multifunction display are distinguished by:
- Acknowledgeable messages without warning tone (lowest priority)
- Acknowledgeable messages with warning tone (low priority)
- Messages with warning tone which cannot be acknowledged (high priority).
In the process messages with high priority have priority over messages with lower or lowest priority.
For certain messages with high priority in addition a warning message is output which is shown against a red background.
Messages of lower or lowest priority can be confirmed via the instrument illumination variable resistor (A1r1). They are then stored in the message memory. Messages with high priority cannot be confirmed and are stored automatically in the message memory.
The messages can be scrolled through in the service menu.
The following systems and functions can request indicator/warning messages via the instrument cluster:
Systems:
^ Function sequence for limiter control messages (without code (ZU8) USA version)
^ Function sequence for ESP(R) control/warning messages
^ Function sequence for ABS indicator/warning messages
^ Function sequence for indicator/warning messages for the supplemental restraint system (SRS)
^ Function sequence for exterior lights warning messages
^ Function sequence for tire pressure monitor warning messages (for model 463.237/249/271 and model 463.202/222/236/248/ 270/303/306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
^ Function sequence for audio/communication/navigation system warning messages
^ Function sequence for AdBlue(R) exhaust after treatment warning messages (for model 463.306/336/346 with engine 642.886)
Functions:
^ Function sequence for lights on reminder warning
^ Parking brake warning function sequence
^ Function sequence for speed warning (in Gulf states only)
^ Function sequence for key reminder
^ Function sequence, national seat belt reminder warning
^ Function sequence for brake fluid level warning messages
^ Function sequence, turn signal confirmation
^ Function sequence for tank cap open warning message (with code (ZU8) USA version)
^ Function sequence for fuel level sensor warning message (with code (ZU8) USA version as of 1.9.09)
^ Coolant temperature warning function sequence
^ Function sequence for engine control warning message
Additional function requirements, function sequence for limiter control messages (without code (ZU8) USA version)
^ Vehicle speed v > 30 km/h
Function sequence for limiter control messages (without code (ZU8) USA version)
An active limiter function is shown in the multifunction display.
After adjusting the variable speed limiter the next time the cruise control switch (S40) is pressed (resume) the speed last set is shown in the multifunction display for t = 5 s.
If the variable speed limiter is activated via the cruise control switch, a warning tone is output when the set speed is exceeded.
Additional function requirements for ESP indicator/warning messages
^ Circuit 61 ON
Function sequence for ESP(R) control/warning messages
If the ESP(R) is deactivated using the ESP OFF switch (N72/1s1) when the engine is running, this is indicated by the ESP warning lamp (A1e41) being permanently on (up to 31.8.10) or ESP OFF indicator lamp (A1e30). In addition for fault messages from the ESP control unit a warning message can be output via the multifunction display.
Additional function requirements for ABS indicator/warning messages
^ Vehicle speed v > 0 km/h
Function sequence for ABS indicator/warning messages
If the ABS is deactivated via differential lock switch group (S76), the ESP warning lamp and ABS indicator lamp (A1e17) are actuated permanently and warning message appears in the multifunction display.
If there is a fault in the ABS, the ESP control unit transmits a corresponding signal to the instrument cluster via the drive train CAN. As a result of this the instrument cluster actuates the ABS indicator lamp and issues a warning message via the multifunction display.
Additional function requirements for SRS indicator/warning messages
^ Circuit 15 ON
Function sequence for SRS indicator/warning messages
If a fault is found by the restraint systems control unit, the airbag indicator and warning lamp (A1e15) is actuated by the instrument cluster.
In addition a message is displayed via the multifunction display.
Additional function requirements for warning messages of exterior lights
^ Circuit 15 ON
^ Circuit 58 ON
Function sequence for warning messages of exterior lights
If one or more defective lamps are detected by the following control units, this is shown via a message in the multifunction display:
- Front SAM
- Rear SAM
- Door control module front left
- Door control module front right
- Trailer recognition control unit
Additional function requirements for tire pressure monitor warning messages (for model 463.237/249/271 and model 463.202/222/236/248/270/303/306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
^ Circuit 15 ON
Function sequence for tire pressure monitor warning messages (for model 463.237/249/271 and model 463.202/222/236/248/270/303/306/336/340/341/346 with code (RY6) Tire pressure monitor (TPM))
If a relevant pressure loss in one or more tires by the tire pressure monitor control unit via the tire pressure sensors a message appears in the multifunction display and the tire pressure monitor warning lamp (A1e66) is actuated.
Additional function requirements for audio/communication/ navigation system control messages
^ Circuit 15 ON
Function sequence for audio/communication/navigation system warning messages
The information on the audio/communication and navigation systems fitted in the vehicle is shown in the multifunction display.
The instrument cluster receives the information via the interior CAN.
Additional function requirements for AdBlue(R) exhaust after treatment warning messages (for model 463.306/336/346 with engine 642.886)
^ Circuit 87 ON (engine timing ON)
^ Engine running
Function sequence for AdBlue(R) exhaust after treatment warning messages (for model 463.306/336/346 with engine 642.886)
The exhaust gases expelled from the engine are cleaned in an oxidation catalytic converter, a diesel particulate filter (DPF) and a reduction catalytic converter (Selective Catalytic Reduction (SCR) catalytic converter).
The AdBlue(R) reducing agent is also injected upstream of the SCR catalytic converter, and is converted to ammonia (NH 3) through thermal decomposition (heat-induced chemical reaction ) and hydrolysis (water-induced chemical reaction).
The supply of required AdBlue(R) reducing agent in the AdBlue(R) tank is monitored by the following sensors, the signals of which can be directly read in by the AdBlue(R) control unit:
- Fill level sensor Full (A103/1b2)
- "Reserve" fill level sensor (A103/1b3)
- "Empty" fill level sensor (A103/1b4)
If the "Reserve" fill level in the AdBlue(R) tank is reached, this is indicated to the driver by an acoustic signal.
If the "Empty" fill level is reached in the AdBlue(R) tank, a plausibility check on the "Empty" fill level is carried out 3 using a computer model. If the plausibility check also results in an "empty" fill level, an audible signal is given, an entry is made in the fault memory of the control unit (CDI), and the engine diagnosis indicator lamp (A1e58) on the instrument cluster lights up. The driver then has up to 20 engine starts available, with an assumed trip distance of 32 kilometers in each case. The number of remaining starts is displayed in the instrument cluster. The vehicle can no longer be started after the last remaining "Start".
The requirements for this are sent by the AdBlue(R) control unit over the drive train sensor CAN, CDI control unit and the drive train CAN to the instrument cluster.
Additional function requirements for lights on reminder
^ Circuit 15C OFF
^ Circuit 58 ON
As of 1.9.09, the status of the front passenger seat belt is also evaluated for issuing a warning message.
National seat belt reminder warning function sequence
The following signals are evaluated by the restraint systems control unit:
- Left front seat belt buckle restraint systems switch
- Right front seat belt buckle restraint systems switch
The rear SAM reads in signals from the restraint systems control unit discretely and passes these on to the instrument cluster.
The instrument cluster outputs a national, visual and acoustic warning.
The seat belt reminder message for the front passenger is only issued, if the front passenger seat is recognized as occupied.
1st warning tone phase:
A quiet gong is sounded for a maximum t = 20 s at an interval of t = 4 s.
After this a change is automatically made to the 2nd warning tone phase.
2nd warning tone phase:
A quiet gong is sounded for a maximum t = 20 s at an interval of t = 2 s.
After this a change is automatically made to the 3rd warning tone phase.
3rd warning tone phase:
A quiet gong is sounded for a maximum t = 20 s at an interval of t = 1 s.
After this a change is automatically made to the 4th warning tone phase.
4th. warning tone phase:
A loud gong is sounded for maximum t = 93 s at an interval of t = 0.5 s.
The seat belt warning lamp (A1e9) flashes during a warning tone output. Once all the acoustic warning phases have been passed through it is actuated permanently.
The acoustic warning only takes place from a vehicle speed of v > 25 km/h.
The seat belt reminder warning is deactivated under the following circumstances:
- When a seat belt that was not fitted is then fitted
- Vehicle at standstill and driver and front passenger door are opened
The seat belt reminder warning is activated again under the following circumstances:
- Vehicle at standstill and driver and front passenger door are opened and then closed again
Additional function requirements for brake fluid level warning messages
^ Circuit 15 ON
Function sequence for brake fluid level warning messages
A too low fill level in the brake fluid reservoir is detected by the brake fluid indicator switch (S11) and transmitted from the front SAM to the instrument cluster via the interior CAN. As a consequence the instrument cluster outputs a corresponding warning message via the multifunction display.
Turn signal confirmation function sequence
The acoustic feedback via the activated turn signaling or the switched-on hazard warning system is realized via the function check of the turn signal light.
The visual feedback takes place via the left turn signal indicator lamp (A1e1) and right turn signal indicator lamp (A1e2).
Additional function requirements for tank cap open warning message (with code (ZU8) USA version)
^ Vehicle speed v > 5 km/h
Function sequence for tank cap open warning message (with code (ZU8) USA version)
If the instrument cluster receives a message at a vehicle speed of v > 5 km/h from the ME-SFI control unit or from the CDI control unit via the drive train CAN that the tank cap is still open, the fuel reserve warning lamp (A1e4) flashes at a frequency of f = 2.5 Hz.
At the same time the message "Tank cap open" appears in the multifunction display.
Additional function requirement for fuel level sensor warning message (with code (ZU8) USA version)
^ Vehicle speed v > 0 km/h
Function sequence for fuel level sensor warning message (with code (ZU8) USA version)
A firmly attached fuel level sensor is detected by comparing any change in the fill level of the fuel tank with the calculated composite mileage.
If the instrument cluster detects a faulty condition, the fuel gauge is gradually moved to the zero point and the fuel reserve warning lamp is switched off if necessary.
The systems (e.g. trip computer) which use the fuel consumption information are informed about the faulty status.
The information required to detect a jammed fuel level sensor is obtained by the instrument cluster as follows:
- The rear SAM transmits the values from the fuel level sensor via interior CAN
- The CDI control unit or ME-SFI control unit transmits information about fuel consumption via drive train CAN
Additional function requirements for coolant temperature warning
^ Circuit 15 ON
Coolant temperature warning function sequence
The coolant temperature is recorded by the coolant temperature sensor (B11/4). The signals from the coolant temperature sensor are read in by the CDI control unit or by the ME-SFI control unit.
The CDI control unit or ME-SFI control unit passes on the information via the drive train CAN. An optical and acoustic warning message is output in the instrument cluster at a coolant temperature of T > 130 °C.
Additional function requirements for engine control warning message
^ Circuit 15 ON
Function sequence for engine control warning message
If a malfunction occurs in the diesel fuel injection system, in the ignition system or in the exhaust system, the engine diagnosis indicator lamp (A1e58) is actuated. The signal for actuating the engine diagnosis indicator lamp is transmitted by the ME-SFI control unit or by the CDI control unit to the instrument cluster via the drive train CAN.
