Phone Module (PHM) (2006-2008): Design: Antenna
The carphone has an antenna. This antenna contains a GPS antenna and a carphone antenna. The carphone antenna is directly connected to the phone module (PHM). The antenna is on the roof.
There are diagnostics for the carphone antenna.
Phone modules (PHM) with Volvo On Call function also have an integrated reserve antenna. This is in the control module. The reserve antenna is only used when a Volvo On Call service is activated and if the standard antenna is not functioning. The reserve antenna ensures that the vehicle data can be transmitted and that a voice call can be connected the Volvo On Call Customer Service Center. The reserve antenna cannot be used for the customer's private subscription if the standard antenna is not working.