2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Electrical Component Locator: Grounds

GROUNDS LOCATION

Component Component Location
BL At left rear floor partition panel. See Figure.
BM At left rear quarterpanel. See Figure.
BN At right rear floor partition panel. See Figure.
BO At right rear quarterpanel. See Figure.
BP At left rear seat back.
BQ At right rear seat back.
EA At right radiator side support. See Figure.
EB Under fusible link block. See Figure.
EC At left radiator side support. See Figure.
ED At top left of dash. See Figure.
EE On right cylinder head. See Figure.
EF On left cylinder head. See Figure.
IG At left side of dash. See Figure.
IH At right side of shift lever. See Figure.
II At right side of shift lever. See Figure.
IJ At right dash brace. See Figure.
IK At right side of dash. See Figure.
IR Under right front seat. See Figure.
Factory Service Tools

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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.

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