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I have dual battery system installed for my 2003 Prado a long time ago. Couple of days ago when I started it took few extra seconds to start and Media player did not start, i.e. it started from secondary battery. I thought main battery is dead so I went to replace main battery. The guy checked and told that main battery is good and he even attached new battery with main battery terminals (and removed terminals of secondary battery) it did not start. As soon as terminals of secondary battery are attached it started smoothly. The alternator is tested and it's fine. It's just not starting from main battery. It even starts when terminals of main battery are removed but won't start if terminals of secondary battery are removed. Even no dashboard light when only main battery is connected.
Any idea gurus!!!
Any idea gurus!!!