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.
2004 Toyota Avalon XLSFACTORY OEM SERVICE PROCEDURE
Service Data
G02835689Charging System Components Service Specifications
| Battery | Specific gravity | |||
| (Except maintenance-free battery) | at 20°C (68°F) | 1.25 - 1.29 | ||
| Voltage | ||||
| (Maintenance-free battery) | at 20°C (68°F) | 12.5 - 12.9 V | ||
| Drive belt | Tension | |||
| New belt | 175 ± 5 lbf | |||
| Used belt | 115 ± 20 lbf | |||
| Generator | Rated output | 12 V 100 A | ||
| Rotor coil resistance | at 20°C (68°F) | 2.1 - 2.5 Ω | ||
| Slip ring diameter | STD | 14.2 - 14.4 mm (0.559 - 0.567 in.) | ||
| Minimum | 12.8 mm (0.504 in.) | |||
| Brush exposed length | STD | 10.5 mm (0.413 in.) | ||
| Minimum | 1.5 mm (0.059 in.) | |||
| Voltage regulator | Regulating voltage | 13.2 - 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:
- • 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.