Had to call out Honda Assist (AA) today as battery completely flat. He got car started with jump leads but all warning lights on and insistent bong. Took it for a little run. All warning lights remained on as well as the bong. Connected his computer but unable to diagnose fault so arranged to follow me to local Honda Dealer (17 miles away). After a couple of miles warning lights and bong stopped and all appeared normal. Continued in convoy for 12 miles without incident. AA man then left and I took car for a 25 mile run. All OK but am unable to connect iPhone via bluetooth, only with USB, so will need to look into this. For ref, car is one year old with 6100 miles. Stood unused in garage for two weeks, last journey was a 230 miles run with just one coffee stop.