From: Boris@invalid.invalid   
      
   Boris  wrote in   
   news:XnsB3699EC29FF4BBorisinvalidinvalid@157.180.91.226:   
      
   > My daughter has a 2020 Mazda 3, with about 75k miles.  Back on July 2,   
   > I wrote about acceleration issues the car was having:   
   >   
   >    
   >   
   > A software update seems to have fixed the problem.  A new battery was   
   > also installed.   
   >   
   > My daughter is now having more problems with her 2020 Mazda 3.   
   >   
   > The problem is that every few days the car won't start, and she has to   
   > use a charger for about 15 minutes to get it started.  She carries the   
   > charger with her.  Then, it will be fine for a few more days, only to   
   > have to repeat the procedure in another few days.  Luckily, she's   
   > always been at her house or my house where she can plug in the   
   > charger.   
   >   
   > She dropped the car off at the dealer's today.  I ususally go with   
   > her, but I couldn't today.  She said the service rep seemed very   
   > knowledgeable, but some of the things he told her seemed very odd to   
   > me.   
   >   
   > 1) He said this is a common problem with newer cars when the owner   
   > takes a lot of short trips, and these short trips don't allow the   
   > battery time to charge.  She does take a lot of short trips, but this   
   > seems nuts to me.  He sees this a lot with elderly owners who only   
   > drive to their nearby store every day, and that it takes about 40   
   > minutes of driving to keep a battery charged.  Also, on newer cars   
   > with all the computerization and 'features', the battery is always   
   > being drained by something, even when unoccupied.  He says this is   
   > especially common with Mazdas and Subarus.  He suggested using a   
   > trickle charger to keep the battery charged.   
   >   
   > The dealer gave her a loaner, the same model but a 2025.  If the above   
   > is true, this loaner will also at some point die on her.  She's still   
   > carrying the charger.   
   >   
   > 2) Something else he said about newer cars (which has nothing to do   
   > with my daughter's car), is that the newer cars get used to how a   
   > driver drives, and when another driver gets behind the wheel, the car   
   > wants to drive like the first driver is in control.  He says a husband   
   > and wife will come in saying that the car has a mind of it's own.  I   
   > can understand a car automatically saving and applying things like   
   > seat and mirror positions, and maybe climate control, but...   
   >   
   > Anyone ever heard of any of the above?   
   >   
   > Thanks.   
      
   Well, maybe the service rep is right about 1).  I found 'AI Overview'   
   articles supporting his statements, and this one:   
      
   https://www.firestonecompleteautocare.com/blog/batteries/how-to-know-if-   
   battery-or-alternator-is-bad/#   
      
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