Hi all, for a while now whenever I start my car (Mazda 3, 2.2D, 2016) the car sounds like is gonna cut off in mid engine start up, but eventually starts. It all started in September and then I found out there was a recall on the shutter intake valve, that apparently builds up carbon and the car feels like it's gonna cut off immediately after it's started and it will judder for a bit. However the car was due for servicing and last Friday I had it done (engine oil, filters, coolant, air con, etc.), also fuel treatment and of course the recall check up on the valve and software update was performed (I guess it didn't need to be cleaned or replaced), but after I got the car back I still have the same issues on start up. The other problem I experience for a while as well and believe it might be related with the start up issue is that the car won't start on high revs anymore (Accelerated Warm-Up System) and it doesn't matter whether outside is subzero temperature, close to 0°C or about 10-15°C, but I do notice the colder the weather the harder it starts. I don't know if the battery charge is insufficient and that may be the issue, because the way it starts it feels a bit like the battery may need charging up, but the start/stop works perfectly fine. I will speak with Mazda tomorrow and ask them to send a full list of what was done and maybe get the car back with as I am not happy at all with it and I believe there is definitely something to do with this intake valve. In the mean time I am hoping if anyone has any idea what it could be or suggestions what I could try to at least get the Accelerated Warm-Up System back on.