i was driving and my coil light started flashing on my 2019 skoda superb.


i stopped, lock and unlocked it, restarted the engine and it is still flashing.

it also comes up with auto stop start not working.

any ideas?

Hi, welcome.

It sounds like to me you've let the car's 12v battery get too low for the liking of the car's complex intertwined computers systems and programs. This can be despite the headlights seeming bright enough and the engine starting easily. The start-stop not operating when it should is often the first sign and warning of the charge in the battery being too low for the liking of the computers and if not recharged sufficiently you can go on to all sorts of unexpected warnings and warning lights, issuers and unseen error codes.

The best way to resolve this is to fully recharge the car's 12v battery with an appropriate battery charger maintainer following the instructions in the Owner's Manual for the car and the instructions for the charger maintainer. A lower longer slower recharge is usually better than a higher, shorter faster recharge. A 4-amp (opr lower) charger maintainer is reasonable choice but this may take many hours to fully recharge the battery so may take more than one session to fully recharge the battery but this is very easy, (clean) hands-off work whilst you do something more interesting.

To prevent a reoccurrence you could do occasional preventative charging of the battery, to full, and this will extend the reliable and useful life of the battery, possibly by a lot but this depends how bad the battery was allowed to go.

On the other hand you may prefer the convenience of prematurely replacing the expensive battery and having it 'coded', bit of a waste of materials and money to my mind but each to their own.

Once you have fully recharged the battery see if the coil light remains as it's easily possible to have two or more issues at once. Also of course (full and timely) servicing and maintenance, or lack of, can effect the car and what lights it might throw up.

ETA: in the Owner's Manual you can look up what a flashing coil warning light could mean.

Link to VWŠkoda Owner's Manuals website. - https://www.skoda-auto.com/apps/manuals/Models

Also link to 'Skoda Octavia Mk3 (2013 - 2020)' forum for more information, threads, posts by owners of that model and year. - https://www.briskoda.net/forums/forum/235-skoda-octavia-mk3-2013-2020/

HTH.

Edited 27 April, 20251 yr by nta16
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