Design

Design

Siren




Data from the siren (Siren Control Module) to the upper electronic module contains configuration and status information. This data is carried via serial communication.
When the alarm is activated the siren sends continuous status signals to the upper electronic module.
The siren is equipped with a battery and a built-in battery charger so that it is independent of the vehicle power supply. The battery charger maintains battery voltage in the integrated battery. When the alarm is activated the power supply is monitored for the siren and serial communication between the siren and the upper electronic module. The siren sounds if the car's power supply to the siren is broken or if communication between the upper electronic module and the siren is interrupted. The battery and the battery charger in the siren cannot be changed separately. The entire siren must be replaced if it is faulty.
The siren is located in a protected position under the fender liner in the front right-hand wheel arch. The siren must be configured after replacement. Configuration is carried out using VIDA.
The siren can be diagnosed.

Sun roof




The Sun Roof Module is operated by one switch. The switch is located in the same unit in the roof as the front reading lamps and the courtesy lighting. The sun roof can be opened, closed and tilted.
The sun roof is powered by a motor in the roof in front of the sun roof. The position of the sun roof is determined by two optical sensors.
There are diagnostics for the sun roof.

Movement sensor




The Mass Movement Sensor detects movement in the passenger compartment using radio waves at 2.450 GHz. The Doppler effect principle is used to determine if the frequency of the received microwave has been modified in comparison to the transmitted microwave. Any change in frequency is interpreted as a movement in the car. When movement is detected, a trigger signal is sent to the upper electronic module which activates the alarm.
The movement sensor is located in the headlining in the center of the car. This allows the sensor to cover as large an area as possible.
There are diagnostics for the movement sensor.

Rain sensor




The rain sensor module optically senses water on the windshield. An infra red beam of specific intensity lights a section of the windshield. The intensity of the reflected beam is measured and compared to the intensity of the transmitted beam. If there is water on the surface of the windshield, the beam distorts, reducing the intensity of the beam. If the beam is not reflected completely it is interpreted as rain on the windshield and the windshield wipers are started.
The signals from the upper electronic module are carried via serial communication. The rain sensor transmits the signals to the upper electronic module. These signals request a particular windshield wiper speed (depending on the amount of rain falling on the windshield), indicate that a sudden large splash has hit the windshield and register the light conditions outdoors.
The rain sensor is located in front of the rear view mirror on the inner side of the windshield. A special windshield is used on cars with rain sensors.
There are diagnostics for the rain sensor.

Interior roof lighting




There are a number of lamps inside the passenger compartment. The lamps include four reading lamps and a general courtesy lamp.
The front left and front right reading lamps and the courtesy light are located in the same unit in the roof, just above the rear view mirror. The two rear reading lamps are located in the roof above the rear seat.
The five lamps transmit control signals to the control module. These signals allow the control module to determine the status of the lamps and switches This allows faults such as broken bulbs, open circuits or jammed switches to be detected.
The five control signals are distributed as input signals at the four inputs in the upper electronic module. The control signal for the courtesy lighting shares the same inputs as control signals for the front reading lamps. The rear reading lamps each have their own input.
Two different lighting times can be programmed using VIDA depending on the requirements of the customer.
- Short lighting time which is the time from when the door is unlocked or closed or from when the engine is switched off until the interior lighting goes out. The time can be set between 5 and 255 seconds. Normal setting is 30 seconds
- Long lighting time, which is the time from when a door is left open or from when a light is lit using a button to when the interior lighting goes out. The time can be set between 0 and 255 minutes. Normal setting is 10 minutes.
There are diagnostics for all lamps in the inner roof lighting.

Remote control




The remote control can be used to lock and unlock the doors, unlock the tailgate (V70 and V70XC), open the trunk lid (S80 and S60), to activate the approach lighting, and to activate the panic alarm (certain markets).
The receiver for the remote control is located in the rear view mirror and transmits signals to the upper electronic module. These signals determine:
- which function should be activated
- at which frequency the receiver receives the signal from the remote control
- which of the remote controls transmitted the signal
- the signal strength received from the remote control.
Up to six remote controls can be stored in the upper electronic module. The control module stores the identity and PIN for each remote control.
The remote control identity and PIN are also stored in the central Volvo database When replacing the upper electronic module, this data is transmitted to the car. This means that the remote controls do not need to be replaced and can be used with the new upper electronic module.
There are two different types of remote control, depending on whether the car is a late or an early model. The two variants are programmed into the control module in different ways. The early variant has an 8 digit PIN. The late variant has one 8 digit and one 16 digit PIN.
The early version and late version differ by chassis number.





- (1); applies to cars manufactured in production plant 1
- (2); applies to cars manufactured in production plant 2.
Information regarding at which production plant a car was manufactured can be found in the VIN number. The 7th character from the right in the VIN indicates the production plant.
If the seat and power door mirrors in the car have a memory function, these functions are affected by the remote controls which are stored in positions 1, 2 or 3. The memory functions store the seat and power door mirror settings at the time the car was locked using one of these remote controls. Next time the car is unlocked using the same remote control, the seat and the power door mirrors move to the same settings.
The remote control battery can be replaced.

Rear view mirror




The rear view mirror has an automatic anti-dazzle function for when light from behind the car is too bright in the mirror (option in certain markets).
One photo sensor on the front of the rear view mirror, and one on the rear side compare light intensity. When the intensities differ by a specified amount the anti-dazzle function compensates to the required degree. The upper electronic module receives and manages the signals from the two photo sensors.
The anti-dazzle function can be set to the customer requirements. The selectable values are Light, Normal and Dark. Initial setting is Normal.
LEDs for the seat belt reminder are located in the rear view mirror, above the mirror lens.

Caution! The rear view mirror with automatic anti-dazzle can only be installed in the factory. Upgrading to, or removing an anti-dazzle rear view mirror cannot be carried out after market due to software limitations.

There are diagnostics for the functions in the rear view mirror.