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Re: 2006 Sport Combi radio question Posted by Dana [Email] (#2822) [Profile/Gallery] (more from Dana) on Mon, 14 Aug 2023 19:41:02 In Reply to: Re: 2006 Sport Combi radio question, Dana [Profile/Gallery] , Sun, 20 Nov 2022 06:33:18 Members do not see ads below this line. - Help Keep This Site Online - Signup |
AS you know, you can get a battery drain through the fuse which powers the infotainment system (radio).
Some times its also the amp in the trunk, sometimes its the radio unit in the front. Many have chosen to just unplug the amp in the back and bypass the o-bus connection. I had such a current drain from my 06 ARC radio. Turns out to be filter power capacitor current leakage due to age. The power filter capacitors in the radio unit (above the CD) and the back amp are always powered. Those capacitors (internal to the case) are the 4700 and 3300 16VDC rated. If you have a current drain associated with these units, you may elect to just change out the capacitors (maybe 24VDC rated) rather than change out the items with a used one of the same age. I changed out the capacitors in my 06 ARC radio and amp under the seat successfully. No more large current draw when the car is off. This can be added to the faulty ISM and CIM possibility for the excessive battery drain. 16VDC manufacture rated capacitors are just to close in voltage to the car's 14.7 charging voltage for any long term reliability.
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