tommy34

I have a 2009 Lexus es 350. 7weeks ago I left my lights on for about an hour I came back saw dim lights the battery had given up. so I was given a jump start.
After that, I have had 4 jump starts. if the car sits out for a while it struggles to start or won't start. Or if I turn it on and turn it off after a minute I would need a jump start.
I thought it might be the weather but it's been about upper 30f to 50f degrees that is not terrible I belive because 12months ago I was riding the snow just fine. today 1/3/2020 I had to jump-start it about 5 pm pacific time FYI (dashboard lights working fine foglights on. ) felt like the battery had no enough power. the last time I drove it was yesterday 1/2/2020 about 8 am.
with that in mind, I went to Autozone battery is good and the alternator is good according to the device I saw it myself self and I even purchased a battery tester well a cheaper one and on my end, the battery looks good so as the alternator.
so I became curious and bought an OBD Scanner the Walmart one (Hyper tough OBD Scanner) for 20 dollars long story short it gave me the above 3 codes (p0345 p0365 p0390 07e8 engine)

P0345- Camshaft Position Sensor A Circuit Bank 2
P0365- Camshaft Position Sensor B Circuit Bank 1
P0390- Camshaft Position Sensor B Circuit Bank 2
FYI(No check engine light no light at all)
Does anyone know what this could be and why? fluid leak or just bad camshaft sensors?

Many thanks

tommy34

just to add to that one of my low beams does not turn on sometimes. ...

Moisture

If your car sits for a couple days or whatever and you're 100% sure that your battery/alternator is good (your battery could be weak) then it looks like something is drawing too much power from your battery.

https://www.wikihow.com/Find-a-Parasitic-Battery-Drain

Here is a very handy link I recommend you look into - start here and see if you find anything.

What's your mileage If everything checks out OK, and your battery is a couple years old or so and has 60k+ miles on it I would install a new battery and see if those codes persist. That might hint at an electrical issue. Next step is to start replacing the camshaft pos. sensors.

jagtoes

Somehow I believe you have a battery problem regardless of what was said. A simple test is check the battery voltage at the battery with a volt meter. Do this in the morning. It should be no less then 12.6V . If it is you battery is bad and needs replacement. Next to continue to jump start the car is foolish. Take it to a pro as it seems you don't have the ability to diagnose the problem. You are doing more damage by jump starting the car.

ESh

I think the battery is bad.

Clutchless

Always address the simple known wear item solution to a problem first. Batteries are known to wear out and fail at any time.
In this case, replacing the battery is easy and cheaper than paying for diagnostics.

Reminds me of my college roommate who had an ancient Volvo and anytime it was really cold out we had to push it down the driveway so he could kick start it by letting out the clutch! He never did get a new battery before he sold it the next Summer.

12jimmyjam

You probably need a new low beam bulb if one isn’t turning on all the time. Remember to replace in pairs though.

tommy34

i agree thanks

tommy34

I think it the battery to I just tested it now it way below 50%. nothing was on. I made sure of that. I have 150k miles on.never had an issue bought it with 110k. thanks

tommy34

I got a 12.32 this morning. and definitely getting a new battery tomorrow. many thanks

Moisture

After you replace the battery reset the codes and scan again once they pop back up

tuffy08

I am having the same problem minus the Headlights. My Check Engine Light is on, the car is having trouble starting. I have been told to change the starter. I dont want to do that if I dont have to, so can you please give us a status on this issue.

Clutchless

Buy a new battery first, it is the most likely cause of your problems and far cheaper than a starter. Costco has batteries, or any Advance Auto or Auto Zone. Those two will also test and install them for you and they have locations all over the DC area.

craig72

Even if the battery was not having issues before, running it that low can permanently damage it, especially if it was an older battery.