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Lion battery- bless you. As I’ve said many times before, this brand would be firmly at the bottom of my desirability list. ‘Mixed reviews’ is being too kind. Worth bearing in mind that Euro Car Parts are believed to have re-branded them - can’t remember the new brand name, but something starting with S ? as per their exclusive Starline. Kind regards, Gareth.

Emily. Two possibilities come to mind: [1] The instrument panel may be faulty even if the engine stills starts. The only way to be certain is to send it to ECU for testing. [2] The 12 volt battery may be defective despite showing 12.2 volts. Your mechanic was on to something when he found low amps from it. Of the two I favour the battery. Winter always highlights deficiencies in battery capacity, so I suggest you get it professionally tested. If a new battery is required ensure you get it coded to the car.

That's exactly what Gareth, and now I, are getting at. A simple voltage reading at minimal load will not reveal defects within the battery. That is why battery testers often use deep discharge equipment which simulate the 200 or more amps drawn by the starter motor. That is not to say your battery is definitely defective, but until you prove otherwise I would regard it as suspect, because failing batteries are often the cause of unexpected electronic problems and errant error codes.

Just an update. I still can’t find what the issue is and the car has recently behaved itself so I will get it looked at next service,