{"id":5047,"date":"2024-05-13T16:42:14","date_gmt":"2024-05-13T14:42:14","guid":{"rendered":"https:\/\/diy-leonmotors.de\/?p=5047"},"modified":"2025-03-18T09:54:56","modified_gmt":"2025-03-18T08:54:56","slug":"car-battery-fault-symptoms-tests","status":"publish","type":"post","link":"https:\/\/diy-leonmotors.de\/en\/autobatterie-defekt-symptome-tests\/","title":{"rendered":"Car battery faulty? - Clear symptoms & tests"},"content":{"rendered":"
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Car Battery died?<\/h1>
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Clear Symptoms & Tests<\/p><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

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Not sure if your car battery is faulty? Is your car starting with difficulty or not starting at all? In most cases, the cause is the battery. However, it can also be due to various other electrical and mechanical components. <\/strong><\/p>\n\n\n\n

To provide clarity, we list some of the symptoms that indicate a faulty battery here. We will also show you how you can easily test your battery at home, all by yourself and using conventional tools.<\/strong><\/p>\n<\/div>\n<\/div><\/section>\n\n\n\n

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  1. Defective Battery Symptoms<\/a>
  2. Clear Car Battery Test - Measurements<\/a>
  3. Additional Car Battery Tests<\/a>
  4. Defective Battery Causes<\/a>
  5. Change Battery<\/a>
  6. Conclusion & Summary<\/a>
  7. More Articles<\/a><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div><\/section>\n\n\n\n
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    Defective Battery Symptoms<\/h2>
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    A defective car battery<\/strong> can manifest in several ways. It\u2019s important to recognize the symptoms early and take action to prevent starting issues<\/strong> from occurring. The following signs often indicate a deeply discharged or damaged battery<\/strong>:<\/p>\n\n\n\n

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    <\/path><\/svg><\/span>Slow starting<\/strong><\/span><\/div>\n\n\n\n
    <\/a><\/path><\/svg><\/span>Weak electronics<\/strong><\/span><\/div>\n\n\n\n
    <\/a><\/path><\/svg><\/span>Engine does not start<\/strong><\/span><\/div>\n\n\n\n
    <\/path><\/svg><\/span>Heating takes longer than usual<\/strong><\/span><\/div>\n\n\n\n
    <\/path><\/svg><\/span>Battery indicator light in the on-board computer lights up<\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n
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    Slow starting:<\/span><\/h3><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n

    The engine doesn't start immediately when turning the key, but instead cranks for a bit longer<\/strong>. This symptom could indicate a weak battery, but it might also point to weak spark plugs or glow plugs<\/strong>. In cold weather, this symptom may occur more frequently.<\/p>\n\n\n\n

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    Weak electronics:<\/span><\/h3><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n

    The car lights, radio, or other electronic devices<\/strong> may function weakly or irregularly with a defective battery. If multiple electrical components show these signs, you can safely<\/strong> assume that the battery is damaged.<\/p>\n\n\n\n

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    Engine does not start:<\/span><\/h3><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n

    If you hear only a clicking sound<\/strong> when turning the key, this could indicate insufficient power from the battery. Another possible cause could be a faulty starter motor<\/strong>.<\/p>\n\n\n\n

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    Heating takes longer than usual:<\/span><\/h3><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n

    In many vehicles, the time until the coolant reaches its optimal temperature and can start heating is bridged by a ceramic heating element<\/strong>. This bridging is typically active in cold outside temperatures<\/strong>. If the battery is weak, the ceramic element can no longer heat, and as a result, the process of warming up the interior takes longer.<\/p>\n\n\n\n

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    Indicator light in the on-board computer:<\/span><\/h3><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n

    A clear sign<\/strong> of a battery defect is, of course, the warning light in the onboard computer. If the battery warning light on the onboard computer does not turn off (remains on) after the start-up procedure, you can be sure that a battery replacement is necessary. This indicator was mainly present in older vehicles. Nowadays, instead of the MIL light<\/strong>, almost all cars show a battery management error message on the display<\/strong>.<\/p>\n\n\n\n

    \""Battery<\/a>
    Battery discharged error message in the information system (BMW)<\/figcaption><\/figure><\/div>\n\n\n\n
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    \n \n \"VARTA\n <\/a>\n\n <\/div>\n\n
    \n \n VARTA Silver Dynamic AGM battery A7 (E39) - Start-Stop and xEV car battery 12V 70Ah 760A - Starter battery for cars with high energy requirements * <\/a>\n
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