GF82.10-P-1004QX Cornering Illumination Function

GF82.10-P-1004QX Cornering Illumination Function
- as of 1.6.04
- with CODE (614) Bixenon headlamp unit
- except CODE (772) AMG styling package - front spoiler, side skirts and rear apron

- Model 209.3/4 except 209.376/476
- with CODE (615) Bi-xenon headlamp unit with integrated curve illumination
- except CODE (772) AMG styling package - front spoiler, side skirts and rear apron

Component Identification:

In addition to the low beam, the cornering illumination permits an improved illumination of the roadway in city traffic. The cornering illumination represents an additional lamp function, which is implemented by means of special front fog lamps (cornering illumination with integrated fog lamp function). While driving forward, the particular front fog lamp on the inside of the curve is switched on. When reversing, the front fog lamp is actuated inversely.

The function prerequisites for driving forward or standstill without reverse gear engaged are:
^ Cornering illumination function enabled
^ Terminal 61 ON
^ Rotary light switch (S1) in "Driving lamps ON" position
^ Rotary light switch (S1) in "AUTO" position and the rain/light sensor (B38/2) has detected "Night"
^ In the instrument cluster (A1), daytime running lamps are active
^ Speed <40 km/h
^ Turn signal indicator active via the direction indicating function
^ Steering angle > parameterized steering angle switch-on value

The function prerequisites for reversing or standstill with reverse gear engaged are:
^ Cornering illumination function enabled
^ Terminal 61 ON
^ Rotary light switch (S1) in "Driving lamps ON" position
^ Rotary light switch (S1) in "AUTO" position and the rain/light sensor (B38/2) has detected "Night"
^ In the instrument cluster (A1), daytime running lamps are active
^ Speed <40 km/h
^ Turn signal indicator active via the direction indicating function
^ Steering angle > parameterized steering angle switch-on value
^ Reverse gear engaged

Dependency on steering angle sensor (N49), turn signal indicator and vehicle speed

Only one cornering illumination lamp is actuated at a time. If the request for right is present at the steering angle sensor (N49), at the turn signal indicator or at both, then the right front fog lamp (E5/2) is actuated.

If the request for left is present at the steering angle sensor (N49), at the turn signal indicator or at both, then the left front fog lamp (E5/1) is actuated. When the turn signal indicators are not activated, the cornering illumination lamp is actuated via the size of the steering angle below a speed of 40 km/h. The cornering illumination lamp remains active for as long as the function requirements exist.

When accelerating in the curve, the active cornering illumination lamp is shut off above the threshold value of v = 40 km/h.

The turn signal indicator has priority over the steering angle sensor (N49) (exception: reverse gear is engaged). The cornering illumination lamps are switched on and off by the respective separately adjustable dimmer ramps. If the circuit status changes from "circuit 15 ON" to "circuit 15 OFF", they are switched off immediately with dimming.

With the reverse gear engaged, the function of the cornering illumination is inverted, i.e. if the request for right is present at the steering angle sensor (N49), at the turn signal indicator or at both, then the left front fog lamp (E5/1) is actuated. If the request for left is present at the steering angle sensor (N49), at the turn signal indicator or at both, then the right front fog lamp (E5/2) is actuated. Only one cornering illumination lamp is actuated at a time, unless the parameterization has been changed to "Parking illumination Max" (in this case both cornering illumination lamps are then actuated). In order to avoid any brief lighting of the cornering illumination lamps when the selector lever is moved from "P" to "D" (via "R"), the message from the EIS control unit (N73) is filtered out for t = 500 ms. A parameter is provided, which is responsible for a minimum lamp switch-on period of the lamps at below v = 40 km/h (one-touch turn signaling, parking, reversing). The minimum switch-on time specifies the operating time starting from the occurrence of a cancel condition. For the switch-on and off operation, a small offset is programmed, which prevents the cornering illumination lamps from flickering when driving at the threshold of v = 40 km/h.

If the lamp has been switched off using the rotary light switch (S1s1) and if the rotary light switch (S1s1) is then set back to "AUTO" or "Manual driving lamp" position, then the cornering illumination lamps are only switched on again if the turn signal indicator, the steering angle sensor (N49) or both permit this in terms of their parameters. In the following operating conditions, the lamps will be switched off immediately without dimming:
^ Diagnosis
^ Activation of the hazard warning flasher function
^ Rotary light switch (S1s1) in position "0"

When treating faults with the cornering illumination lamps, the same fault algorithms apply as otherwise also apply for the lamp failure check. A fault in a cornering illumination lamp is displayed in the instrument cluster (A1).