2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Service Data

Identifying Starting & Charging Service Data

Starter Rated voltage and output power 12 V 2.0 kW
No-load characteristics Current 100 A or less at 11.5 V
Brush length STD 15.0 mm (0.591 in.)
Minimum 9.0 mm (0.354 in.)
Spring installed load STD 21.5 to 27.5 N (2.2 to 2.8 kgf, 4.9 to 6.2 lbf)
Minimum 12.7 N (1.3 kgf, 2.9 lbf)
Commutator Β 
Diameter STD 35.0 mm (1.378 in.)
Minimum 34.0 mm (1.339 in.)
Undercut depth STD 0.7 mm (0.028 in.)
Minimum 0.2 mm (0.008 in.)
Circle runout Maximum 0.05 mm (0.0020 in.)
Yoke Β 
Shut coil resistance at 20Β°C (68Β°F) 1.5 to 1.9 Ξ©
Generator Rated output 12 V 100 A
Rotor coil resistance at 20Β°C (68Β°F) 2.1 to 2.5 Ξ©
Slip ring diameter 12.8 to 14.4 mm (0.504 to 0.567 in.)
Brush exposed length 1.5 to 11.5 mm (0.059 to 0.453 in.)
Voltage regulator Regulating voltage 13.2 to 14.8 V
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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