2003 Lexus ES 300FACTORY OEM SERVICE PROCEDURE

Electrical Component Locator: Grounds

GROUNDS LOCATION

Component Component Location
BA Under driver's seat.
BB Under front passenger's seat.
BC At front side of left rear wheelwell.
BD At front side of right rear wheelwell.
BE At lower center of back panel.
EA At right fender. See Figure.
EB At right fender. See Figure.
EC At left fender. See Figure.
ED At left fender. See Figure.
EE At rear of cylinder head. See Figure.
EF At intake side of cylinder block. See Figure.
IA At dash reinforcement, left side. See Figure.
IB At dash brace, left side. See Figure.
IC At dash brace, right side. See Figure.
ID At dash brace, right side. See Figure.
IE At dash reinforcement, right side. See Figure.
IF At dash reinforcement, right side. 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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