Hello all need some advice connected van up to car yesterday ready to tow and pressed the car battery button on the control panel and it came up wit either Lob or L06 it's not clear what the letters or numbers are. All road lights work etc but the fridge doesn't never had this issues at all and all I can find online is nothing to do with when hooked up for towing any help much appreciated still totally new to all this only been towing for a year thanks for any advice help.