John6502

It means your car needs to go to the workshop but as it's holidys just suck it up or get a taxi

Oh and if you do decide to replace it, don't go for a cheap after market one like I did, yes it gave me back my acceleration top end performance but it was even harder to start. Changed it for manufacturer's original part and all issues fixed.

Jessica, take a look at this link for the symptons of a bad MAF sensor and count how many apply to your car and then you can decide whether to change it or not: https://mechanicbase.com/engine/mass-air-flow-sensor-symptoms-maf/

Hi Jessica, I would suggest checking out your MAF s'tensor - when I had an issue with one it did just what you describe - significantly reduction in performance and erratic idling response. I doubt it's the battery coding issue; the stop/start system just check if the battery is capable of delivering the power without causing excessive voltage drop (if it isn't then it could cause other electronic components to hic-up during the startup which you really wouldn't want) and if it senses a problem it just disables the stop/start system.

Hi Haines17, I've just joined this forum after buying the very same car last Sunday (colour and all). I'm very pleased with it apart from the pedal lag issue - having come from a 2013 3L Q5 I'm having trouble getting used to this 1s lag especially when pulling away from junctions & roundabouts; how are you finding it?