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.
2011 Mazda 3 L4-2.5LFACTORY OEM SERVICE PROCEDURE
Battery
Battery electrolyte specific gravity [20 °C {68 °F}] 1.22-1.29
Battery load test current 50D20L (40): 150 A
Battery load test current 55D23L (48): 180 A
Battery load test current 75D23L (52): 195 A
Battery back-up current (When the ignition is off (key is removed) and all doors are closed.) 40-60 mA
Battery slow charge current 50D23L (40): 4.0-5.0 A
Battery slow charge current 55D23L (48): 4.5-5.5 A
Battery slow charge current 75D23L (52): 5.0-6.0 A
Battery quick charge current [30 min] 50D23L (40): 25 A
Battery quick charge current [30 min] 55D23L (48): 30 A
Battery quick charge current [30 min] 75D23L (52): 35 A
Battery load test current 50D20L (40): 150 A
Battery load test current 55D23L (48): 180 A
Battery load test current 75D23L (52): 195 A
Battery back-up current (When the ignition is off (key is removed) and all doors are closed.) 40-60 mA
Battery slow charge current 50D23L (40): 4.0-5.0 A
Battery slow charge current 55D23L (48): 4.5-5.5 A
Battery slow charge current 75D23L (52): 5.0-6.0 A
Battery quick charge current [30 min] 50D23L (40): 25 A
Battery quick charge current [30 min] 55D23L (48): 30 A
Battery quick charge current [30 min] 75D23L (52): 35 A
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.
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