Charlie32 Posted December 30, 2007 Share Posted December 30, 2007 I was gone for two weeks and when I got back my RX350 would not start. Was in garage at the time. I charged the battery and drove about 150 miles. Started checking the battery votage with voltmetter and in 11 days without driving battery was down to 11.95 volts. Doors and back door all closed except hood which has no hoodlight. Does not seem normal to me. Charlie32 Quote Link to comment Share on other sites More sharing options...
wwest Posted December 31, 2007 Share Posted December 31, 2007 I was gone for two weeks and when I got back my RX350 would not start. Was in garage at the time. I charged the battery and drove about 150 miles. Started checking the battery votage with voltmetter and in 11 days without driving battery was down to 11.95 volts. Doors and back door all closed except hood which has no hoodlight. Does not seem normal to me. Charlie32 Check the water level for each cell. If one cell is significantly lower than others you have a bad cell so replace the battery. Quote Link to comment Share on other sites More sharing options...
gabep Posted December 31, 2007 Share Posted December 31, 2007 Kragen or Autozone will check it free. You can also buy a hydrometer for about $3. Quote Link to comment Share on other sites More sharing options...
Charlie32 Posted January 20, 2008 Author Share Posted January 20, 2008 I ran amperage check on battery with every normal thing off. Ingntion, doors etc. the amperage draw continouis is 2.1 amps. 2.1 amps not milliamps. That is a pretty good draw for everything off. I have not found the reason for this from Lexus yet. If I leave at airport for longer than 2 weeks battery is too low to start. Quote Link to comment Share on other sites More sharing options...
wwest Posted January 20, 2008 Share Posted January 20, 2008 I ran amperage check on battery with every normal thing off. Ingntion, doors etc. the amperage draw continouis is 2.1 amps. 2.1 amps not milliamps. That is a pretty good draw for everything off. I have not found the reason for this from Lexus yet. If I leave at airport for longer than 2 weeks battery is too low to start. Remove and re-install fuses one by one until you find the load. Quote Link to comment Share on other sites More sharing options...
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