Sign in to follow this  
Charlie32

Battery Runs Down

Recommended Posts

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

Share this post


Link to post
Share on other sites
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.

Share this post


Link to post
Share on other sites

Kragen or Autozone will check it free. You can also buy a hydrometer for about $3.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites
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.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this