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Juve1982
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Hi all Just wanted to say a Big Thank You! If you want to know why ... I had issues with my Cayenne Turbo 957 since last December, it all started with a dead battery. I installed a new one and everything worked fine for about one or two days. Then again, battery dead. First I thought the new battery had issues, I recharged it and it was fine for again one or two days. Then I started reading myself through various (German) forums and heard something about this forum and a potential solution. While reading through, I realized that my outdoor sensors were also not working since the problem initially came up (nevertheless the plastic dummy worked to start the engine). So I started doing some measures and realized that after about 15 minutes the current drain jumps from 30 mA to 3-5 A. Obviously something was messing it up, I removed the Kessy unit and checked the MOSFETs as described in this forum. It turned out both MOSFETs had a short circuit. It was not easy to find fitting MOSFETs since westlforidacomponents.com does practically not ship to Switzerland. But I found similar components on Mouser 942-AUIRFZ24NSTRL which I ordered and managed to install today. I gave it a shot and did my very first soldering at all with this task. To be honest, the solder points look very bad and I had big problems desoldering the broken MOSFETs, also I thought I messed up some other components because I mistakenly desoldered them and had to fix it somehow. Then the moment of truth, I reinstalled Kessy and checked the outdoor sensors --> no luck ? . Then I drove a few minutes, parked the car and checked again, and yaaaay ? outdoor sensors work, locking and unlocking seems to be fine. Then the second test, current drain measurement: After approximately 30 minutes there seems to be no wrong current drain, it remains at around 30 mA. Third and last test will follow next week when the car stays in the garage for a few days and hopefully does not empty the battery. Will keep you updated. Again, many thanks for the great help!!!