Every time I start my 2015 Vantage GT the analog clock starts to change to 4:30 and then back to the actual time. I’ve tried changing time, turning auto time set off and on, 12/24 HR and battery disconnect.

 

Maybe you should drive more than twice a year. LOL 😂

 

Mine also does some funky spinning around, but does land at the correct time.

 

I've done quite a bit of looking but haven't found anything yet. Glad to hear I'm not the only one.

 

It reads time from the GPS system, perhaps its loosing satellite signal when asleep or in the garage. As stated above, at least it works.

 

the clock is normally a jewel in the dash, or is the newer model a part of sat nav..?

 

2015 DB9 here. I noticed it happen some times if not used for a few days. My guess is power supply from battery stops after few days and when unlocked, it gets power and uses GPS to set correct time.

 

It happened to me when my battery needed to be changed.

 

So once you changed the battery it stopped doing it?

 

My guess is it is a failing battery, too. I have a 2012 Maserati QP 5 Sport GTS. The Interstate battery was only 3.5 years old and on a Battery Minder. Twice within a month or two before the battery failed, I had to reset my clock because it reset to 12:00 pm upon start up. I thought, "Oh, Italian electronics", and went on my way. Well, the battery failed completely (while at home) and needed a jump start. No other advance warning offered - e.g., no weak starting - until it 100% failed. My tech told me that the clock freaked out because of the system's need to conserve power when the voltage gets low (I may not have that 100% technically correct, but you get the drift.) Flip the battery.

 

Yes it did.