Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Phone Module (PHM) (2009 Late - 2012): Design: Antenna
A separate antenna belongs to the telephone. This antenna contains a telephone antenna and, for vehicles prepared for Volvo On Call, a GPS-antenna as well.
The phone antenna is directly connected to the phone module (PHM).
For vehicles equipped with Volvo On Call-functionality, the GPS-antenna is directly connected to Phone Module (PHM). This is due to the GPS-position not being available from other control modules in the vehicle.
The antenna is installed on the roof.
Telephone and GPS-antennas can be diagnosed.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.