Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: On-vehicle Inspection

NOTICE:

• The combination meter assembly receives the vehicle speed signal from the brake actuator assembly (skid control ECU) via CAN communication. Therefore, perform the following inspection referring to values on the Data List of the brake actuator assembly (skid control ECU) because it is the source of the vehicle speed signal.
• Data List values of the brake actuator assembly (skid control ECU) are used for this inspection. Therefore, make sure to perform this inspection after confirming that DTCs are not output.
• If the tire size or tire inflation pressure is not within the specified range, or the tires are excessively worn, the speedometer indication error will increase. Therefore, make sure to perform this inspection after checking that the tire size, tire inflation pressure and tire wear are in the specified range.

• for Optitron Meter Type Reference mph (for speedometer with Imperial Units Main Scale)

  Techstream Indication (mph)	Acceptable Range (mph)
  20	19.3 to 21.8
  40	39.6 to 42.4
  60	60.2 to 63.0
  80	80.5 to 83.7
  100	101.0 to 104.2
  120	121.5 to 124.7
  140	142.0 to 145.2

  Reference km/h (for speedometer with Metric Units Main Scale)

  Techstream Indication (km/h)	Acceptable Range (km/h)
  20	18.5 to 22.5
  40	38.8 to 43.3
  60	59.4 to 63.9
  80	79.6 to 84.6
  100	100.1 to 105.1
  120	120.6 to 125.6
  140	141.1 to 146.1
  160	161.7 to 166.7
  180	182.2 to 187.2
  200	202.7 to 207.7
  220	223.2 to 228.2
  240	243.7 to 248.7

  OK:

  Speedometer reading is within the acceptable range at each vehicle speed.

• for TFT Meter Type Reference mph (for speedometer with Imperial Units Main Scale)

  Techstream Indication (mph)	Acceptable Range (mph)
  20	19.3 to 21.8
  40	39.6 to 42.4
  60	60.2 to 63.0
  80	80.5 to 83.7
  100	101.0 to 104.2
  120	121.5 to 124.7
  140	142.0 to 145.2

  Reference km/h (for speedometer with Metric Units Main Scale)

  Techstream Indication (km/h)	Acceptable Range (km/h)
  20	18.5 to 22.5
  40	38.8 to 43.3
  60	59.4 to 63.9
  80	79.6 to 84.6
  100	100.1 to 105.1
  120	120.6 to 125.6
  140	141.1 to 146.1
  160	161.7 to 166.7
  180	182.2 to 187.2
  200	202.7 to 207.7
  220	223.2 to 228.2
  240	243.7 to 248.7

  OK:

  Speedometer reading is within the acceptable range at each vehicle speed.

• *1: w/ Turns on only when the ECO customize setting is set to on.
• *2: w/ Intelligent Clearance Sonar System
• *3: for AWD
• *4: for TFT Meter Type

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Meter / Gauge System DTC No. Detection Item Memory Note Link B1321 Lost Communication with EMV DTC stored - B1326 Lost Communication with ...

Lost Communication with EMV (B1321)

DESCRIPTION After the combination meter assembly has started, the combination meter assembly attempts to detect the radio receiver assembly by performing communication via local bus. This DTC is store ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Steps to take in an emergency: If the vehicle becomes stuck
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