"No GPS signal" mark is displayed [11/2018 - 10/2022]: Procedure

1. Check the cabin for any object that might interrupt radio reception or additional devices which use radio waves on the instrument panel. If such an object exists, remove it and check if the "No GPS signal" mark disappears.

   HINT: 

   The GPS uses extremely weak radio waves originating from satellites. If the signal is interrupted by obstructions or other radio waves, the GPS may not be able to properly receive the signal.

   OK

   The "No GPS signal" mark disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

See step  2

1. Check if the vehicle is in a location where GPS signal reception is poor. If the vehicle is in such a place, relocate the vehicle and check if the "No GPS signal" mark disappears.

   HINT: 

   The GPS uses 24 satellites in 6 orbits. At any point in time, 4 satellites should be able to pinpoint your vehicle. However, GPS signals may not reach the vehicle due to influence from the surroundings, vehicle direction and time. For examples, see the following illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Example	*b	In a tunnel
   *c	In a building	*d	Under an overpass
   *e	On a forest or tree-lined path	*f	Between tall buildings
   *g	Under a cliff or overhang	-	-

   OK

   The "No GPS signal" mark disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

SYSTEM RETURNS TO NORMAL 

Result: 

NG 

See step  3

1. Enter the "System Sensors Check" screen. Refer to Check GPS & Vehicle Sensors in Operation Check.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Refer to OPERATION CHECK [11/2018 - 10/2019] , or refer to OPERATION CHECK [10/2019 - 10/2022]

2. Check how many of the following codes appear in the "Reception number" column.

   HINT: 

   T or P appears.

   OK

   At least 3 codes appear.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2018 - 10/2022] 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2018 - 02/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [02/2019 - 10/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [10/2019 - 10/2022]