Are there any sign when the battery on a 2018 Octavia scout is about to fail Thought I had the problem today but fortunately it was the key battery. My car is on its original battery so can probably expect it to play up sooner or later. I just wonder if there are signs to look out for. Thank you

A regular early sign is the stop/start feature stops working.

Random warnings can be a sign

45 minutes ago, CianKT said:

Random warnings can be a sign

Can I suggest random, false warnings.

I recently replaced the original 10 year old battery in my car.

I didn’t seem to be having any issues with stop/start, but I was getting the odd random fault message - I can’t remember what - but I also had an issue with warm starting. It was fine starting from cold, but when starting it from warm, occasionally it would fire up OK, but when I released the key it would cut out.

Replaced the battery and it’s all good now.

Unusual that stop/start was still functioning with a failing battery, but great that replacement cured the bogus fault indications.

Wouldn't it be great if a failing battery meant the warning light on the dash didn't switch off after starting the car. I mean, how hard could it be?

The cynic in me would suggest that the reason is that by doing this the dealers would miss out on stacks of wasted hours trying to track down faults that don't exist and are caused entirely by a bad battery.

1 hour ago, Gammyleg said:

Wouldn't it be great if a failing battery meant the warning light on the dash didn't switch off after starting the car. I mean, how hard could it be?

The cynic in me would suggest that the reason is that by doing this the dealers would miss out on stacks of wasted hours trying to track down faults that don't exist and are caused entirely by a bad battery.

A problem would be the cost of including a battery load tester into the vehicle equipment schedule - for a function that would only be relevant once every 3 to 9 years.

Almost certainly would be much cheaper for owner to buy their own dedicated tester, or request a proper battery condition test every service.

1 hour ago, Warrior193 said:

A problem would be the cost of including a battery load tester into the vehicle equipment schedule - for a function that would only be relevant once every 3 to 9 years.

Almost certainly would be much cheaper for owner to buy their own dedicated tester, or request a proper battery condition test every service.

I kind of disagree with both of the above statements. Considering the amount of garbage, pointless single-use ( sometimes, think electric seats FFS ) tech that is incorporated into the cars, including something that's actually useful to the end user would be extremely cost effective. They wouldn't have to buy their own test kit or pay for a test at every service.

Additionally, think of the hundreds of posts on here regarding Christmas Tree warning displays on the dashboard that end up being caused by......? a bad battery!!

Makes sense to me