Something is draining my battery 134,000 M

Have you tried to jump the battery and crank it ?
Its possible the alternator failed or something happened to drain the battery.
Is the security warning light on ?

Do you have an aftermarket stereo system? these cause a tremendous strain on your alternator which may be the problem. Check all connections to alternator, battery, and ground cables. the alternator will provide enough power to run your vehicle if it is working properly. If it is faulty, it will drain your battery. take it to an auto parts store to be tested before purchasing a new one, because it could be as simple as a loose or corroded wire.

battery is getting low!

Suspect you have a loose clamp on a radiator hose or the oil change guy made something leak. There is a tool which is similar to a a bicycle pump in that it pressurizes the water system and your engine does not have to run or be hot to test. Some major auto parts stores may have a loaner.

Its going to stay hot and lose pressure until you fix the leak.

take it to your local parts store they should check it for free to see if its the battery or alternator

possibly the starter is bad if you hear a clicking noise from the started could be bad check also the battery might need a new one

Welcome to the world of BMW's. return the car to the seller. you got a bad one. You got an electrical short draining the battery. Bring a blank check and sign it over to the dealer. They're going to have to run through the entire electrical system to find the short. That work alone is worth more than the a used up 2001 325i.

The charging system (alternator ) is not working ! Your best bet would be to take it to a qualified repair shop

I have 2003 Saturn Ion. I had this problem over and over 2006 - 2008. IT IS THE IGNITION SWITCH. IT IS DEFECTIVE IN ALL ION'S.The replacement may be defective also, not sure. Mine was driving fine, went ino store for 1 hr came out stone cold dead, would not start and key **** in. Had to have towed to Saturn. They said it was battery and replaced battery.I said this did not make sense. 6 yr battery only 3 yr old , never weak start, never run down, in summer? It happened again 2 mo later. They tried to say battery , I said no. They checked battery. It was fine. Could not find problem. They did total electrical check. It happened again 1 mo later. drove into feed store. Went in came out it happened again. I got jump from someone 30 min later and started right up. 2 wks later same, I got jump 20 min later started. 1 mo late same. Sometimes it would just start up. Took to another Saturn place. They said Ignition switch, saturn was having big problem with this on Ions. Got changed and no problems for 1 yr. I was talking to repesentative at Saturn Headquarters. I told the problem. They said the ignition switch has an electrical component, or it is hooked to electrical component. THEY SAID IF I HAD JUST SAT THERE 20 MIN WITH KEY OFF, THE COMPUTER CHIP FOR IT WOULD HAVE RESET ITSELF WHEN IT COOLED DOWN AND I COULD HAVE STARTED IT EACH TIME. IT WAS BEST TO GET REPLACED AND NOT WORRY, BUT THIS WILL HELP YOU IN A STRESSFUL PINCH, UNTIL YOU CAN GET THE IGNITION SWITCH REPLACED. NOTE: Go to Auto Zone , O 'Reilleys, Pep Boys etc, get a repair manuel , CHILTON $ 23- $ 25 , for your year , make, model car. CHILTON IS MUCH BETTER THAN HAYES MANUEL. It is wonderful and many things you can do yourself.

Take in your car to an auto parts store and have the battery tested....and, the alternator.