Navigation System Guidance Erroneous Or Does Not Function (82.85/265)

Publication date: 2003-07-22
Reference number: 82.85/265

NAVIGATION SYSTEM GUIDANCE ERRONEOUS OR DOES NOT FUNCTION

TECHNICAL SERVICE BULLETIN

Reference Number(s): T-B-82.85/265, Date of Issue: July 22, 2003

MERCEDES-BENZ:	Model 163.154/157/172/174/175; Model 463.246/249, Model Year 2000 through 2003
GROUP:	82 - Body Electrical System, Telephone (CTEL), Radio/CD Changer, Wiper/Washer System, Anti-Theft Alarm (ATA), Convenience Feature

Navigation System Guidance Erroneous or Does Not Function Due to Possible Switch-Off or Incorrect GPS Signals During Worldwide Crisis Situations

During worldwide crisis situations, GPS signals may be switched off or incorrect which will cause erroneous positioning and navigation.

Perform test drive to verify the complaint.
If the navigation is found to have erroneous positioning and navigation, compare to other similar vehicles with navigation.
If the comparison vehicles' navigation systems produce similar erroneous positioning, the GPS signal may be intentionally altered during worldwide crisis situations.
If other vehicles do not indicate erroneous positioning and navigation, the vehicle's navigation system should be diagnosed. Possible areas to explore during diagnosis:
1. Navigation CD, may not be the latest version. Trial fit the latest Navigation CD and road test.
2. Vehicle's GPS antenna system/reception
3. Mapping error
  If the complaint does not occur during the test drive, a mapping error is present on navigation CD - Please inform TAC. Inform customer of mapping error.
Verify GPS antenna operation. Verify longitude and latitude versus known location, example another known working vehicle.