2003 Lexus GS 430 User Guide - Page 327
2003 Lexus GS 430 Manual
Page 327 highlights
64G084 64g083a " 1 Red line 2 Acceptable range Horizontal movement gauge: The red line should not deviate by more than 2 blue lines to either side of the gauge. If the red line is out of the acceptable range of the beam angle gauge, adjust it using bolt B. Turn the bolt B in either direction using a Phillips-head screwdriver. If the error is over the value specified above, take the vehicle to your Lexus dealer to adjust the headlight aim.
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64G084
"
1
Red line
2
Acceptable range
Horizontal movement gauge:
The red line should not
deviate by more than 2 blue lines to either side of the gauge.
If the red line is out of the acceptable range of the beam angle
gauge, adjust it using bolt B.
64g083a
Turn the bolt B in either direction using a Phillips–head
screwdriver.
If the error is over the value specified above, take the vehicle
to your Lexus dealer to adjust the headlight aim.