LR VIN 29XXX delivery 8/4. I've had the key fob since delivery and it worked as advertised until this weekend. The buttons on the fob lock and unlock the car and I'm able to start...but the buttons on the fob that unlock and open the front and rear trunks do nothing. Holding the trunk button down for 2 seconds does open the the charging port door but no luck with either trunk. I deleted the fob and added it again and still get same issues. Battery is supposed to last 5 years and I've only had the fob for 4 weeks. I guess that might be my next step - replace the battery. Any other suggestions?