Originally Posted by
edcross1608
My 2005 coupe also has a parasitic drain. Here are my finding after digging into it this morning: With the car locked the drain was significant and fluctuating. In unlocked state the draw settled down to .25 Amp with all fuses in place. After checking all fuses I found Fuse #35 (instrument cluster) accounted for .05amp drain and #9 (int lights, horn, alarm) accounted for .17amp drain. Remembering that the RCM had been updated allowing the horn to work independently I'm removing fuse #9 to reduce the draw to .08amp, when unlocked. I did not check the draw by locking manually. Not ideal but an improvement
ONE MORE THING:
Congratulations on doing what almost NO ONE DOES: You actually measured the current.
You have already done more to fix your issue than 99% of those who cry about "parasitic battery drain".
I am so impressed, I won't scold you for using the awful phrase "a parasitic drain".
