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HOMESERVICE MANUALSLEXUS2010RX 450H 3.5 BREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTNAVIGATION (FOR DVD) (SYMPTOM TESTS)NAVIGATION SYSTEM (FOR DVD)ROUTE CANNOT BE CALCULATED (TO 08/2009)PROCEDURE
2010 Lexus RX 450h 3.5 B

Route cannot be Calculated (TO 08/2009): Procedure

2010 Lexus RX 450h 3.5 BSECTION Procedure
  1. CHECK MAP DISC 
    1. Check that the map disc is not deformed or cracked.
      Fig 1: Ensure Map Disc Is Not Cracked Or Deformed
      GTY102967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      No deformations or cracks on the map disc

    NG → REPLACE MAP DISC 

    OK: Go to next step 

  2. CHECK CABIN 
    1. Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

      HINT: 

      • A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.
      • The navigation system may not operate normally when the temperature is -20°C (-4°F) or lower, or 65°C (149°F) or higher.

      OK

      Condensation is not likely being produced and the temperature is not high or extremely low.

    NG → CABIN TO APPROPRIATE TEMPERATURE 

    OK: Go to next step 

  3. SET DESTINATION 
    1. Set another destination and check if the system can calculate the route correctly.

      OK

      Route can be correctly calculated.

    NG → See step   4 

    OK → NORMAL OPERATION 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
RENDER: 1.0x

NO RELATED

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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.