1401-535
UnclassifiedElectrical
What This Code Means
Batteries may not fully recharge; Ammeter reading not near zero; Risk of battery freezing; Electrolyte level below the FULL mark; Dirty battery case
Possible Causes
- •Batteries not fully charged
- •Battery has a low charge
- •Battery is too cold
- •Engine is not run for long periods of time
- •Engine is run for short periods
Suggested Actions
- 1Check the condition of the electrolyte with the 1U-7298 Coolant/Battery Tester (C) or the 1U-7297 Coolant/Battery Tester (F)
- 2Check the condition of the electrolyte with the 1U-7298 Coolant/Battery Tester or the 1U-7297 Coolant/Battery Tester
- 3Clean the battery case with a mixture of 0.1 L of ammonia and 1 L of clean water, then rinse with clean water
- 4Clean the battery case with a mixture of 0.1 L of baking soda and 1 L of clean water, or a mixture of 0.1 L of ammonia and 1 L of clean water, then rinse with clean water
- 5Clean the battery case with a mixture of 0.1 L of baking soda and 1 L of clean water, then rinse with clean water
- 6Ensure a full charge
- 7Keep batteries charged
- 8Keep batteries fully charged
- 9Keep batteries warm
- 10Remove the filler caps and add distilled water (or clean water low in minerals) to the FULL mark
- 11Remove the filler caps and maintain the electrolyte level to the 'FULL' mark on the battery (use distilled water, or clean water low in minerals if distilled is unavailable)
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Get a diagnosis walkthrough for 1401-535 on your specific Caterpillar unit — cited to the OEM manual, not a forum guess.
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