Hello, With my Seat 6L the steering aid went off from one second to the other. With VCDS read out… 1 error found: 01309 – Control unit for steering aid (J500) 49-00 – no communication sheet protection on the battery is in order. Today came the replacement servo pump. Built in and power on it, exactly the same error message. You can delete the error, but appears immediately after a few seconds. Someone a tip where the error source might still be? Thanks e