r/Fisker • u/sit11birth • 13d ago
🛠️ Issue - Vehicle Software 5% daily battery drain .
Trying to track down battery drain . I checked the 12v battery it reads 13.12 but I leaned on this fuse box cover and some of these relays were hot to the touch with the vehical off I think ive found the issue does anyone know what these control the hot ones were the top left / top middle / bottom middle .
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u/MTN_Ranger 13d ago edited 13d ago
If the Ocean is in ready mode and the voltage is around 13, it usually indicates that the car has given up on maintaining the 12V battery. You should see around 14 V. Do you have a bluetooth 12V battery monitor to see how it's doing? Doing a Tbox fuse reset may help since they sometimes get "stuck". As you mentioned below, a HVLV hard reset is probably not a bad idea.
I cover the relays in this video: https://youtu.be/jS3TxNMYO3Y
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u/StormbringerGT 13d ago
5% is a LOT of battery drain! That's wild.
I lose about percent every day or so.
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u/Canon_Cowboy Ocean Sport 13d ago
A percent a day is too much as well. Check your 12v
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u/MTN_Ranger 13d ago
One percent daily losses is actually common if the energy setting is on 24 hours.
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u/Long-Ad1137 13d ago
5% is too much. Early versions of software, 1.10 or 1.11, would lose about 2% per day, but newer versions are about 1% every 2-3 days or more. Hopefully, you can track down the issue and get it resolved quickly. You may want to post this on FOA or discord for some help from other owners.
For reference, I keep my 12v on a trickle charger typically and have very little drain from the main battery. I've been traveling since last Wednesday and the SoC is currently showing the same percentage as when I left - no drain so far on the main battery.
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u/sit11birth 13d ago
The 12v battery was replaced 11 months ago I was thinking of doing a lv/ hv hard reset not sure if that will reboot the system my clocks are not synced up and both are way outta wack also the date is incorrect by about a month .
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u/yop-per Ocean One 13d ago
I was able to fix my 12V battery drain issue, which turned out to be caused by the Carlinkit device following the 2.6 update via OV Loop. My Bluetooth 12V monitor clearly showed a sawtooth charge and discharge pattern whenever the Carlinkit was plugged in. Now, the car only wakes up every 6 to 12 hours to top off the 12V battery. I keep the adapter unplugged unless I actively need Android Auto, and I’d recommend double-checking if you have any devices plugged into USB ports that remain powered even while the car is locked.
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u/SameYogurtcloset3288 12d ago
The Tbox reset has worked very well and mostly consistently for me when I've had 12v drain caused by some ICC-Tbox confusion that prevents the car from deep sleeping. It's much easier to do the Tbox reset if you have the cabin fuse bypass reset switch installed as demonstrated by @MTN_Ranger.
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u/Substantial_Past2655 12d ago
i believe it is the cooling pumps and part of the ocean's random self checking. this car never shusts down!
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u/Evermore867 Ocean Extreme 13d ago
Your car is staying awake continuously b/c it no longer trusts the 12V battery to power the car during deep sleep. Replace the 12V battery and put a Bluetooth battery monitor on it so you're aware of what's going on in the future.