VOLVO On Call

Fig 1: Identifying Volvo On Call

Courtesy of VOLVO CARS CORPORATION

Volvo On Call is a system developed by Volvo that gives the owner access to various services for safety and service. The system is designed to give the driver/passenger quick telephone contact with a service center established by Volvo - the Volvo On Call Service Center.

Service center staff assess the situation to determine what action should be taken. Using the information provided by the Volvo On Call system, the service center can determine the exact position of the vehicle and quickly direct an ambulance, police or tow truck to the vehicle as necessary. The available services can be divided into two groups - safety and service.

A Volvo On Call service can be activated in one of the following ways:

by the customer via the switches for Volvo On Call (3/267)
by the Volvo On Call Service Center
by the vehicle system.

The strength of the lighting in the switches for Volvo On Call is controlled via the rheostat controls in the light switch module (LSM) (3/111).

Phone module (PHM) (16/60) receives the rheostat signal from the central electronic module (CEM) (4/56) via infotainment control module (ICM) (3/281) on the MOST network.

When activating a Volvo On Call service the phone module (PHM) transmits the information to the infotainment control module (ICM). The infotainment control module (ICM) transmits on to the driver information module (DIM) (5/1) that displays a text message that a Volvo On Call service is activated and what status it has.

Each time a Volvo On Call service is started the present vehicle data is transmitted to Volvo On Call Service Center. The vehicle data contains information about:

Call type. SOS or On Call service.
The time the message was sent. Phone module (PHM) receives information on time from the central electronic module (CEM) via the CAN network.
The Vehicle VIN number. Phone Module (PHM) receives information from the central electronic module (CEM) via the controller area network (CAN).
Alarm status (deactivated, activated, deployed). The phone module (PHM) receives information about the status of the alarm from the central electronic module (CEM) via the controller area network (CAN).
Ignition switch position. Phone module (PHM) receives information on ignition switch position from the central electronic module (CEM) via the CAN network.
Vehicle position. The phone module (PHM) receives the vehicle position from the multimedia module (MMM) (16/108) via the MOST network.
Voltage source. What voltage source is used by the phone module (PHM). Main or back-up battery.
Engine running or not. The phone module (PHM) receives a signal from the central electronic module (CEM) via the controller area network (CAN).
Fuel volume. The phone module (PHM) receives the information about the remaining fuel volume from the central electronic module (CEM) via the CAN network.
Status of main battery. The phone module (PHM) receives information about the voltage over the main battery from the central electronic module (CEM) via the controller area network (CAN).
Ambient and internal temperature. The phone module (PHM) receives information on the ambient temperature from the central electronic control module (CEM) and the internal temperature from the climate control module (CCM) (4/6) via the CAN network.
Locked/unlocked. The phone module (PHM) receives information about whether the vehicle is locked from the inside or from the outside, from the Central electronic module (CEM) via the controller area network (CAN).
Front side window open/closed. The phone module (PHM) receives information about the status of the front side windows from the driver door module (DDM) (3/126) and the passenger door module (PDM) (3/127) via the controller area network (CAN).
SRS activated or not. The phone module (PHM) receives information about whether the vehicle has been in a collision and the SRS system has been activated. The information is received from the Supplemental restraint system module (SRS) (4/9), both via the controller area network (CAN) and the collision cable. The collision cable runs from the Supplemental restraint system module (SRS) to the phone module (PHM) and the central electronic module (CEM). The collision cable is a backup solution in the event of the controller area network (CAN) communication disappearing.

Safety

An SOS service can be started in two ways:

automatically, in the event of a collision when a component in the SRS system has been activated
manually, by the customer pressing the SOS button or selecting the service from the phone menu

In a collision where an SRS component is activated, the signal is transmitted from the supplemental restraint system module (SRS) to the phone module (PHM). The phone module (PHM) transmits the vehicle data to Volvo On Call Service Center and connects a call. The call is made in order to establish what action is necessary, for example, whether an ambulance or recovery vehicle is required.

When a Volvo On Call service has been activated the reserve battery is used if there is not sufficient voltage in the main battery.

Service

The Volvo On Call Service Center gives the customer access to various services, such as:

roadside assistance, for example help if you have a flat tire or have run out of fuel
remote unlocking of the vehicle
tracking the vehicle, can be carried out at the customer's request if the vehicle has been stolen
informing the owner that the alarm has deployed.

The services that the customer can access vary by market.

Remote unlocking of the vehicle occurs after the owner has contacted the Volvo On Call Service Center, identified themselves using a password and given the required service. The owner and Volvo On Call Service Center then decide at what time the vehicle should be unlocked. The Service center can then transmit a command to the phone module (PHM) that the vehicle must be unlocked.

The central electronic module (CEM) then uses the CAN network to send a signal to the phone module (PHM) when the trunk lid/tailgate handle is closed. If the signal from the central electronic module (CEM) is within the time interval preset by the customer and the Volvo On Call Center, the phone module (PHM) uses the CAN network to send a request to the central electronic module (CEM) to unlock the vehicle. The phone module (PHM) then sends confirmation to the Volvo On Call Center that the vehicle has been unlocked. When a door or the trunk lid/tailgate is opened, the alarm is triggered. The alarm remains active until it is switched off in the correct manner.

If the vehicle alarm is activated, for example by theft, information about the alarm status is transmitted from the central electronic module (CEM) to the phone module (PHM) via controller area network (CAN). If the alarm is active for more than 15 seconds the phone module (PHM) transmits the vehicle data to the Volvo On Call Service Center, which contacts the owner and informs what has happened. In the first instance Volvo On Call Service Center calls the vehicle, if the person answering cannot give the password the owner is called on other numbers that the owner has supplied to the Service center.

If the vehicle has been stolen the owner can request that the service center tracks the vehicle. The Service center transmits a request to the phone module (PHM) to continuously send vehicle data. The interval of the vehicle data that is sent is determined by the Volvo On Call Service Center.