Instructions for the following are downloaded when a system is configured:

Which control modules are included in the system (for example central electronic module (CEM)).
Which control module should do what (for example "you are the control module for the driver's door - you are the control module for the passenger door").
Which functions should be included (for example if the alarm function should be on or off).
Which components are connected to the control modules (for example whether the inclination sensor is included in the alarm or not).
Which messages a control module is to transmit and which it is to receive
Where the different data should be stored.

The configuration must be changed (adapted) after installing accessories and it must be downloaded again after replacing any control module. The information is stored and retrieved from Volvo's central database when downloading software.

NOTE:

Even if two cars appear identical they may behave differently because of differing configurations, a parameter may have been modified by the customer or workshop.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

The Controller Area Network (Can): Configuration

Use the Manual With the Right Hardware

When to See a Mechanic