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.
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HOMESERVICE MANUALSBMW2011335IS 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTMEMORY MODULESGENERAL ELECTRICAL SYSTEM - REPAIR - E93BATTERY61 20... THRESHOLD VALUES FOR BATTERY ASSESSMENT OF ALL BATTERIES (EXCEPT TELEPHONE BATTERIES)
2011 BMW 335is 2D Convertible, Standard
61 20... Threshold values for battery assessment of all batteries (except telephone batteries)
2011 BMW 335is 2D Convertible, StandardSECTION 61 20... Threshold values for battery assessment of all batteries (except telephone batteries)
SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .
Test step 1 - before battery charge
| State of charge (1) | Start output (2) | Test result | ||||||
|---|---|---|---|---|---|---|---|---|
| cannot be tested | Charge | |||||||
| less than 50 % (2) | Charge | |||||||
| greater than 50 % | less than 75% | Charge | ||||||
| greater than 50 % | greater than 75 % (3) | Charge | ||||||
| greater than 80 % | greater than 75 % | OK | ||||||
|
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Test step 2 - after battery charge
| State of charge (1) | Start output (2) | Test result | ||||
|---|---|---|---|---|---|---|
| cannot be tested | Faulty | |||||
| less than 50% | less than 75% | Charge | ||||
| greater than 50 % | greater than 75 % | Charge | ||||
3) Fully charge until the state of charge is greater than 80%. |
||||||
NOTE:
If the battery has been tested from the positive terminal in the engine compartment, repeat the test for safety directly on the battery.
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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.