Assalam alaikum fellow pakwheelers
I have been having this very strange issue in my 2009 Corolla XLi, so this started back in September 2022 where I was once driving with my parking lights on (fog lights were off because it had blown a fuse) where I decided to flash my headlights (dipper) (Oem bulbs) and noticed that my subwoofer would make (pop noise) I flashed my lights couple more times and then the power steering light came up for 2 sec and then the subwoofer popping when I flash my lights was gone, one thing I also noticed that day was that whenever I’m flashing my lights, turning my lights high and low beams on the lights on the speedometer would flick like they would dim for 0.001 sec if this makes sense, I decided to ignore the issue as I thought its getting old these issues may show up every now and then but sometime later I was driving home and decided to indicate to the left, the music was playing not loud but was playing, this is at nighttime so I had my low beams on, the moment I turned my indicator on the subwoofer popped and the power steering light came on
The very next day I decided to check its volts with a multimeter it turned out that with my high beams on and the ac running the volts at the battery were 13.33 volts, clearly showing that the alternator isn’t doing much, took to the electrician the very next day he serviced the alternator said nothing was out of the ordinary when he tore out and diagnosed that the battery was going bad, the battery was old like a 1.5 years old at that point, he charged the battery and I took the car home
The problem got worse and worse to the point that whenever I would flash my high beams during the daytime with no lights on or with parking light on the subwoofer would pop and power steering light would came on, eventually the car stopped cranking and we got a new battery daewoo dl65 the problem wasn’t solved even with a new battery the subwoofer popping issue was gone for now but the speedometer were still flickering when flashing high beams, once the car took a long crank and was at the electricians again this time he cleaned the terminals with a machine put gel on them and for a month almost it became perfect until one day I noticed that the speedometer lights where flickering slightly when I flashed my high beams (around this time I had gone cheap 2k rupees leds on my low beams 35 watts because they looked cool lol and also the electrician did fix the fog lights by diagnosing that the fuse had blown, the fuse had blown multiple times at this point, first when I was installing grill glow a light that illuminates the grill area the led strip was powered by the left parking bulb wire and second it was blown when I was installing the leds) and again the car had the same issues the speedometer lights along with ac knobs lights would flicker when flashing lights (dipper) or whenever I would turn on my wiper, turn my steering wheel (the lights around the entire car would dim) and flick whenever I hit steering lock, my car has aftermarket power windows, central whenever I would use any of the light would flick
I ignored these issues but untill now (6 month old battery) where when the music is being played at any volume over 32-33 with parking lights on and fog lights (100 watt bulbs) and I would flash my beams the subwoofer and speakers would pop and also when I hit steering lock with fog lights off the subwoofer or the speakers don’t pop but it pops when I hit steering lock
The amp I am running is a presence 1600 watt rms and cerwin vega 12 mobile subwoofer 200 watt rms, speakers are being run the stock company fitted lcd
Sorry for this extremely long post but it would mean a lot to me if anyone helps me diagnose this issue, do I need a bigger alternator or a bigger battery?
