Batteries is an original 2004 so I've finally given in and got a new one coming - £45. Beep tonight at 25mph but not at 90 . It just stopped on its own. I'll see what the new battery does but I have to say I'm pretty doubtful. The old one shows full charge even after 2 weeks in the winter and cranks the engine easily, but so many people reckon its a problem so here goes. Also service and mot time next week so I'll see if any codes have appeared.