mad400h

HI  Just did amp test on battery looking for parasitic draw.  Reads draw of 120 milliamps.  Anyone know what acceptable draw is for 2008 rx 400h?  

thanks mike

Hi everyone.  I never had a car that had to have a charger on it whenever it sat for 3 days.  Now battery going dead overnight, had checked 3 times and told battery and charging system good. Left it with negative battery cable disconnected and still down to 10 volts overnight, won't start at 10 volts.  I think battery bad no matter what I'm told.   Going to buy new battery and see if fixes problem.  Any suggestions on good batteries for 2008 400h?  

thanks    Mike

Hi,  when I bought this from a lexus dealer they told me it wasn't driven enough to keep battery charged.  When I drive 3-4 days in a row and let it sit for 3-4 days still goes dead. Will talk to dealership again but not expecting much help.   thanks for suggestions    mike

Hi  Bought this 2008 rx400h last year.  Don't drive it alot and battery goes dead after 4-5 days.  Had battery and charging system checked, are good.  Terminals clean and tight. Has lexus battery in it.  Lexus report showed battery replaced multiple times in the past, thought because not driven much, now see this is a hybrid problem.  Currently disconnect battery when not going to go anywhere.  Thinking of getting quick disconnect, used one before, worked good.  Anyone ever find an easier fix for this?  Thanks

Hi Dave    We don't drive it much, retired.  The battery and charging system checked good.  Terminals are clean and tight.  Has a lexus battery.  We bought this last year with around 67,000 miles,  lexus report showed battery had been replaced 4-5 times.  Thought this was because not driven much.  Thinking of getting a battery quick disconnect, used one before.  Have the battery negative cable off now until going to drive it again.  Any ideas?  How about a trickle charger?  Thanks   Mike

Hi, I'm new here and have a problem with 2008 rx 400 h.  Battery goes dead after not being driven for 3-4 days.  Anyone figure out a fix?  thanks   Mike