I have a 2010 acura tsx and something seems to be draining my battery overnight when its not being used. i looked up online to see what could cause it and i keep seeing the BT module so i removed that and still doing it.. does anyone know what else can be causing this.. i checked my starter , alternator, and battery and its not either one.. replaced the batttery and its only 2 mos old... Taking it in tomorrow to find out if they can find what it is but i know mechanics take advantage especially of females lol luckily im not one of those to be taken advantage of lol but no codes are coming up bc theres no check engine light shown. HELP!! i need answers.. this car is my baby thanks

 

did u get it fixed. I have 2010 tsx that had an alternator issue for a month before it died. Was very unconventional failure until it failed completely.

If u have amp meter u can see if the drain is happening when the key is off. Simple voltage checks at fuse bock may show a drain. Typically with a clamp amp meter installed and start pulling fuses till it shows no current flow. You could also look for a voltage increase at the battery with a volt meter it may be a small change. Any positive battery voltage increase identifies the drain. You can unplug devices also to find the draw. Just harder to get to them.
votage regulators can loose fly back diode and drain battery to ground. It’s not common but can happen. Typical cause is wrong jumper cable connection.