MJenk

I managed to resolve this myself on my 2020 Skoda Karoq. I appreciate that this post is a couple of years ago, but I did some extensive research to try and find a solution, so I thought I'd share my answer. Apparently, when the backup OCU battery health is crap, the SOS system comes up with an error, which doesn't affect your driving but knocks the signal out for your satnav, interferes with the microphone on calls, and has a very irritating warning light. Mine reset when I left the car off for a while, or held the SOS button for 20 seconds and made an emergency call, and cancelled it again, but it always came back. I found this was a possible issue and found the OCU backup battery here: Volkswagen / Audi / Skoda Battery For Emergency Supply 3G0915089A - LLLParts I called a local dealer to confirm it was the right fit for my model, and it was, then just bought it from that site as it was about £45 cheaper than the dealer. Then you have to take out the unit, which for me was behind the headlights control. I removed the panel under the steering wheel with a hex screwdriver, and used a 10mm socket wrench to take off the Gateway Unit (part number, which I could see when I took the panel off was 3Q0 907 530 AG). Then the OCU was stacked on top of that (part number 5WA 035 284 B). Swapped the battery in the OCU with the one I bought, popped everything back in, and never had the issue come up again. Notes! There is a recall on certain Skodas I found out for this issue, sadly mine was not one of them, it's worth calling and checking if your car is part of this, as a software update can sometimes fix it if this is the case. Remove the negative terminal on your battery before doing any of this, so you don't blow any fuses or get a bit of a shock!

I managed to resolve this myself on my 2020 Skoda Karoq. I appreciate that this post is a couple of years ago, but I did some extensive research to try and find a solution, so I thought I'd share my answer. Apparently, when the backup OCU battery health is crap, the SOS system comes up with an error, which doesn't affect your driving but knocks the signal out for your satnav, interferes with the microphone on calls, and has a very irritating warning light. Mine reset when I left the car off for a while, or held the SOS button for 20 seconds and made an emergency call, and cancelled it again, but it always came back. I found this was a possible issue and found the OCU backup battery here: Volkswagen / Audi / Skoda Battery For Emergency Supply 3G0915089A - LLLParts I called a local dealer to confirm it was the right fit for my model, and it was, then just bought it from that site as it was about £45 cheaper than the dealer. Then you have to take out the unit, which for me was behind the headlights control. I removed the panel under the steering wheel with a hex screwdriver, and used a 10mm socket wrench to take off the Gateway Unit (part number, which I could see when I took the panel off was 3Q0 907 530 AG). Then the OCU was stacked on top of that (part number 5WA 035 284 B). Swapped the battery in the OCU with the one I bought, popped everything back in, and never had the issue come up again. Note! Without stating the obvious, remove the battery negative before doing this, don't want to blow a fuse.