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.
2007 Lexus LS 460FACTORY OEM SERVICE PROCEDURE
Service Data
1UR-FSE STARTING SERVICE DATA
| Starter assembly | Standard current: 190 A or less at 11.5 V |
| Starter armature assembly | Standard resistance: Segments - Segments: Below 1 Ω Armature - Commutator: 10kΩ or higher |
| Standard diameter: 35.0 mm (1.378 in.) Minimum diameter: 34.0 mm (1.339 in.) Standard undercut depth: 0.7 mm (0.028 in.) Minimum undercut depth: 0.2 mm (0.008 in.) Maximum commutator's runout: 0.05 mm (0.0020 in.) |
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| Starter yoke assembly | Standard resistance: Lead wire - Field coil: Below 1 Ω Field coil end - Field frame: 10 kΩ or higher |
| Brush length | Standard length: 15.5 mm (0.610 in.) Minimum length: 10.0 mm (0.394 in.) |
| Starter brush holder assembly | Standard resistance: Positive brush holder - Negative brush holder: 10 kΩ or higher |
| Standard spring installed load: 21.5 to 27.5 N (2.2 to 2.8 kgf, 4.8 to 6.2 lbf) |
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| Starter magnetic switch assembly | Standard resistance: Terminal 50 - Terminal C: Below 1.0Ω Terminal 50 - Switch body: Below 2.0 Ω |
| Starter relay | 3-5:10 kΩ or higher 3-5: Below 1Ω (when battery voltage is applied to terminals 1 and 2) |
| Starter cut relay | 3-5:10 kΩ or higher 3-5: Below 1Ω (when battery voltage is applied to terminals 1 and 2) |
| Engine switch | Pushed: 7 (SS1) - 5 (GND) Below 1 Ω Pushed: 2 (SS2) - 5 (GND) Below 1 Ω Not pushed: 7 (SS1) - 5 (GND) 10 kΩ or higher Not pushed: 2 (SS2) - 5 (GND) 10 kΩ or higher |
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.