Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Lexus RX 300 AWDFACTORY OEM SERVICE PROCEDURE
Service Data
STARTING SERVICE SPECIFICATIONS
| Starter | Rated voltage and output power | 12 V 1.4 kW | |
| No-load characteristics | Current | 90 A or less at 11.5 V | |
| Rpm | 3,000 rpm or more | ||
| STD | 15.5 mm (0.610 in.) | ||
| Brush length | Minimum | 8.5 mm (0.335 in.) | |
| STD | 17.6 - 23.5 N (1.8 - 2.4 kgf, 3.9 - 5.3 lbf) | ||
| Spring installed load | STD | 11.8 N (1.2 kgf, 2.6 lbf) | |
| Minimum | 30.0 mm (1.181 in.) | ||
| Commutator | |||
| Diameter | STD | 29.0 mm (1.142 in.) | |
| Minimum | 0.6 mm (0.024 in.) | ||
| Undercut depth | Minimum | 0.2 mm (0.008 in.) | |
| Maximum | 0.05 mm (0.0020 in.) | ||
| Circle runout | Maximum | ||
| Magnetic switch | |||
| Contact plate for wear | Maximum | 0.9 mm (0.035 in.) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.