The GPS Antenna
The data transmitted from the GPS antenna to the RTI control module consists of signals received from GPS satellites.
There is a signal booster (antenna amplifier) integrated in the GPS antenna. The signal is strengthened before it is transmitted to the GPS receiver which is integrated in the RTI unit. The GPS also adapts the impedance of the signal.
The RTI system and the GPS antenna require contact with at least three satellites to be able to calculate the position of the car. The RTI system can communicate with up to eight satellites at the same time.
The position calculated from the GPS satellites is accurate to within +/- 30 meters.
View the GPS information under system settings to check how many satellites are available.
The power supply is from the RTI control module. The power supply uses the same high frequency wiring as the GPS information that is sent to the RTI unit.
The GPS antenna is located in the parcel shelf in S80 and S60 models.
If there is no GPS signal, the signal should be checked outside. The signal may be blocked if the car is indoors. Large objects on the parcel shelf or tinted rear windshields may also be the cause.