General: The back lighting of all warning lamp symbols and the automatic transmission range engaged together with the drive program selected is provided by LEDs.
Warning lamps |
Required signal |
|---|---|
General brake warning lamp |
Lit red: Instrument cluster detects “brake pad wear” Brake fluid level signal via the I-bus from light check module CAN-bus message "electronic brake power distribution (EBV)" failed from ASC control unit (must be coded as installed). |
|
Lit yellow: Malfunction message via CAN-bus "brake assistant (HBA)" from ASC control unit (must be coded as installed). |
Parking brake warning lamp |
Ground from parking brake switch (parking brake) |
Seat belt indicator lamp |
I-bus signal from light check module |
Fuel reserve lamp |
Resistance value of both lever sensors (analog input) |
Turn signal indicator lamps |
I-bus signal from light check module |
Fog light indicator lamp |
I-bus signal from light check module |
Rear fog light indicator lamp |
I-bus signal from light check module |
High beam indicator lamp |
I-bus signal from light check module |
Oil pressure indicator lamp |
Ground from oil pressure switch |
General brake warning lamp: The warning lamp can be switched on by the light check module (LCM) when, for example, the LCM detects that the brake fluid level is too low. The warning lamp is also switched on after ignition "ON" as a function check (predrive check) and goes out when a minimum engine speed of 400 rpm is exceeded.
In the event of a break in the line connection from the IKE sensor output to the IKE sensor input, the brake lining wear detection function sends an I-bus telegram to the LCM. When this signal is received, a corresponding message is sent from the LCM to the IKE where it is shown in the text display. The general brake warning lamp is not switched on for this purpose.
Parking brake warning lamp: The warning lamp is activated by a switch on the parking brake. The switch is open when the parking brake is released.
The "parking brake" information is made available in the form of a telegram via the instrumentation bus (I-bus ) and body bus (K-bus).
Seat belt indicator lamp: Seat belt indicator lamp activation is dependent on the coding data. For vehicles without a seat belt buckle contact, it is switched on for approx. 6 seconds after terminal 15 "ON".
On vehicles equipped with a seat belt buckle contact, the warning lamp is switched on from terminal 15 "ON" by a corresponding I-bus telegram from the light check module (LCM) until the seat belt contact is opened (seat belt buckle latched in position).
Fuel reserve lamp: The fuel reserve warning lamp is not switched by a reserve contact in the level sensor. It is switched as a function of the tank contents by comparison with a reserve threshold value.
Turn signal indicator lamps: The turn signal indicator lamps are switched by means of a corresponding I-bus telegram from the light check module (LCM) to the instrument cluster electronics (IKE).
Fog light indicator lamp: The fog light indicator lamp is switched by means of a corresponding I-bus telegram from the light check module (LCM) to the instrument cluster electronics (IKE).
Rear fog light indicator lamp: The rear fog light indicator lamp is switched by means of a corresponding I-bus telegram from the light check module (LCM) to the instrument cluster electronics (IKE).
High beam indicator lamp: The high beam indicator lamp is switched by means of a corresponding I-bus telegram from the light check module (LCM) to the instrument cluster electronics (IKE).
Oil pressure indicator lamp: The warning lamp is switched by the oil pressure switch. The information from the oil pressure switch is read by the instrument cluster electronics (IKE) as status data and a corresponding I-bus telegram is sent to the light check module (LCM). When this signal is received, a corresponding message is sent from the LCM to the IKE where it is shown in the text display.
Note
All warning lamps not listed have no functional relationship with the instrument cluster electronics (IKE). They are only supplied with positive or negative from the display unit of the instrument cluster.