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.
2012 Lexus IS 350 Base, AWDFACTORY OEM SERVICE PROCEDURE
Service Data
| Starter assembly | Rated voltage and output power | 12 V 1.7 kW | |
| Specified current | 90 A or less at 11.5 V | ||
| Starter armature assembly | Standard length | 3.1 mm (0.122 in.) | |
| Maximum length | 3.8 mm (0.150 in.) | ||
| Brush length | Standard length | 9.0 mm (0.354 in.) | |
| Minimum length | 4.0 mm (0.158 in.) | ||
| Starter relay | Specified condition | 1 - 2 | Below 1 Ξ© |
| 3 - 5 | 10 kΞ© or higher | ||
| Starter cut relay | Specified condition | 1 - 2 | Below 1 Ξ© |
| 3 - 5 | 10 kΞ© or higher | ||
| Engine switch | Resistance | Pushed: 7 (SS1) - 5 (GND) | Below 1 Ξ© |
| Pushed: 2 (SS2) - 5 (GND) | |||
| Not pushed: 7 (SS1) - 5 (GND) | 10 kΞ© or higher | ||
| Not pushed: 2 (SS2) - 5 (GND) | |||
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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