BMW 7 Series: Low Beam Headlight

To switch on the low beam headlights, the light switch in the lights control panel must be turned to low beam headlight (switch position 2) When the low beam headlights are switched-on the bi-xenon headlights are activated.

After turning off the engine, the side lights stay on although the light switch is in switch position 2. The side lights are switched off automatically as the driver's door is opened.

NOTE: The light switch must be consciously set to switch position 1 in order to make the vehicle more easily detectable by means of the side lights when it is dark.

Leaving the side lights switched on can drain the vehicle battery.

Fig. 50: Identifying Low Beam Headlight

High-beam Headlight

The high beam headlight is switched on under following conditions:

• Terminal 15 ON and
• Light switch in position 2 low beam and
• Turn-signal/high-beam switch for high-beam headlight ON.

The headlight flasher is activated by pulling on the turn-signal/high-beam switch. The function is operative as from Terminal 30F ON.

Direction Indicator/high Beam Switch

The steering column switch cluster contains the direction indicator/high beam switch. The signal from the turn-signal/ high-beam switch is transmitted from the steering column switch cluster via the FlexRay. The central gateway module transfers the signal to the KCAN2. The footwell module thus receives the signals from the turn-signal/high-beam switch.

Automatic Driving Lights Control

The following conditions must apply for the low-beam headlights to be switched on:

• Light switch in position A automatic driving light control and
• Status "Terminal 15 ON" and
• Rain/driving lights/solar sensor or rain/light/solar/condensation sensor signals darkness.

NOTE: The rain/driving lights/solar sensor has now been extended with the condensation sensor function. It performs the condensation sensor function for the air conditioning system.

Only the rain/light/solar/condensation sensor is used from now on in the description. The description also applies correspondingly for the rain/driving lights/solar sensor. Both sensors are connected over the LIN bus.

The footwell module switches on the low-beam light if the signal from the rain/light/solar/condensation sensor fails due to a defect.

The low beam lights are switched on together with the side lights by the automatic driving lights control system as soon as the rain/light/solar/condensation sensor detects a certain level of ambient brightness. The signal is sent from the rain/light/solar/condensation sensor via the LIN bus to the junction box electronics.

The junction box electronics routes the signal via the K-CAN2 to the footwell module. In turn, the footwell module evaluates the signal and switches on the driving lights.

The driving lights switched on by the automatic driving lights control system can be switched off with the light switch or by means of the rain/light/solar/condensation sensor.

The side lights can also remain on after "Terminal 15 OFF" because they were switched on by the automatic driving lights control function. The side lights are switched off automatically after opening the driver's door.

If a different door is used to exit the vehicle, the side lights will be switched off when the vehicle is locked.

The rain/light/solar/condensation sensor supplies the switch-on signal for the driving lights at a specific level of darkness.

The roof functions center is responsible for the voltage supply to the rain/light/solar/condensation sensor.

The junction box electronics queries relevant statuses via the LIN bus and transmits them over the K-CAN2.

Fog Lights

Switching Fog Lights ON/OFF The fog lights can be switched on under the following conditions:

• Terminal 15 ON and
• Light switch in position 1 side lights or position 2 low-beam headlights ON or automatic driving lights control and
• Fog lights button pressed.

The fog lights are switched off by pressing the button again. When switched on, the fog lights can also be switched off by turning the light switch to the "Lights OFF" position.

The fog lights can be switched on again when the light switch is set to the side lights, low beam or automatic driving lights control position.

Fig. 51: Identifying A H-8 35 W Bulb In Fog Light

A H-8 35 W bulb is fitted in each fog light.

Direction Indicator Lights

The front and rear direction indicator light as well as the side direction indicator repeaters can be switched on as from Terminal R ON. They are operated by means of the switch on the steering column switch cluster. The signal from the steering column stalk is transmitted redundantly via the FlexRay and a separate wire. This increases system availability, for instance in the event of faults.

It is nonetheless still possible to use the direction indicators if the information does not arrive at the footwell module via the bus system. This is because the information is available redundantly over the separate wire.

NOTE: The redundant transmission is also used for the one-touch indicating and headlight flasher functions.

A defective light source in the front or rear direction indicator lights causes the remaining direction indicator lights to flash at double the rate. A defective light source in the front direction indicator repeaters has no influence on the flashing rate of the direction indicator lights.

All direction indicator lights are equipped with LEDs (Light Emitting Diodes).

One-touch Indicating

The direction indicator lights are activated once in connection with one-touch indicating. In the personal profile it is possible to set the one-touch indicating function from flashing once to three times.

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