Q: Battery going dead on a 2003 Honda Odyssey

asked by on

I have an O3 Honda Odyssey and the battery keeps going dead. The battery checks okay but I can't find a drain on the battery. When I jump-start, it starts up with no problem. It seems to be an overnight thing. Could it be some intermediate drain on it?

Yes, it certainly could be. Of course, the first thing you’d want to do is have any good mechanic check your battery and your alternator. There is a load-test that the mechanic can do; YourMechanic guys can do it and any good mechanic can do it.

Have the battery load-tested and the alternator load-tested. Because simple voltage tests on it are not enough. You really need a good, serious test done to see if there is a problem. Now, if there isn’t a problem in either the battery or in the alternator, then you do have a drain. I have a video out there that’s called "fixing battery drain on your car," so watch that video as it shows you how to test your battery drain to see what’s leaking out and what needs repair.

If it’s beyond you, then get a mechanic to check your battery for you. But there is probably a drain somewhere if the battery and alternator check okay.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Battery going dead on a 2003 Honda Odyssey

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Doesn't show if car is on Park or Drive.

It sounds like you may have a faulty instrument cluster or a short of some kind in the wiring of your instrument cluster. I would recommend having this issue inspected by a certified mechanic who is proficient with Mercedes Benz...

Q: Car has been sitting and won't start

The car sitting for a year is most likely a dead battery. These cars are known to have loss of memory problems and the systems have to be reset with a factory scanner. I recommend you have a mechanic like...

Q: Potential electrical issue? Already replaced alternator and battery.

Hi there. I understand how frustrating things like this can be. I don't think you have any serious underlying electrical problems with the car. What I believe may be happening is simply a case of bad luck with aftermarket parts;...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.