Brake Warning Indicator: Description and Operation

Rear-End Electrics

Control Systems - Roll-up Sunblind on Side Window

The roll-up sunblinds on the rear side windows can be raised or lowered only when the rear side windows are closed. If child protection is activated, the roll-up sunblinds on the rear side windows can only be operated using the roll-up sunblind button in the front center console or the power window buttons in the driver's door.

Control Systems - Roll-up Sunblind on Rear Window

When the ignition is switched on, the roll-up sunblind can be raised or lowered in the luggage compartment cover. Push roll-up sunblind button forward or back. The indicator light in the button comes on. The roll-up sunblind is raised or lowered. The roll-up blind on the rear window is lowered automatically when reverse gear is engaged. If the roll-up sunblind is extended and reverse gear is engaged, the blind is lowered automatically. The roll-up sunblind is raised when the vehicle drives forward again.

Prerequisites:
- The ignition must be switched on.
- The function must be activated on the multi-function display.

Control Systems - Exhaust flap control (DFI)

Control Systems - Electronic Adjustable Steering







A signal (to lock or unlock) is sent to the ELV via a hardwired line.

Control Systems - EC Mirrors

The LIN control unit for EC mirrors uses sensors to measure the glare caused by vehicles coming behind and darkens the interior mirror accordingly. This darkening value is also transmitted to the exterior mirrors via the bus system. The function can be manually controlled using a button.

Control Systems - Sliding Roof







Sliding roof (LIN 1) is ready for operation when:
- The ignition is switched on.
- After the ignition is switched off and before the driver's or passenger's door is first opened, but for a maximum of 10 minutes.

Control Systems - DFI Engine wake-up

The DFI engine wake-up terminal is connected directly to the engine control unit and is used to wake up the engine control unit when the engine-independent heating is operational.

Heated Rear Window

The rear-end electronics receive a CAN message via the gateway, stating that the heated rear window should be switched on or off. The rear-end electronics also control the relay for the heated rear window.







Coolant Level

The coolant level sensor specifies the current value to the rear-end electronics. From there, the information is forwarded as a CAN message via the gateway to the instrument cluster and the lamp in the instrument cluster.







Wiper and Washer Functions

The rear wiper electronics are hard-wired and connected via a connector. The rear wiper can be activated using the wiper stalk in the instrument cluster. The rear-end electrics control unit then receives a CAN message. The rear wiper only wipes if terminal 15 and terminal X are on.







Brake Pad Wear

Sensors for monitoring brake pad wear are attached to all four brakes. This signal is communicated to the rear-end electronics and sent as a CAN message to the instrument cluster.







Wheel Speed Signals

The wheel speed signals (PWM) are acquired directly from the PSM control unit.