Hi all guess what, took all your advice & spoke to lexus, as i also have problem with cd unit, Lexus cambridge Caroline extremely helpfull & contacted Lexus GB. They replied in under two hours offering a new cd/ unit and !!!! wait for it 5 yes 5 new wheels, not bad for a nearly 5 year old car. They also confirmed standard warranty on cd units is now 5 years, still only 3 years on wheels but due to not being notified about the exhange wheels available when Marshalls cambridge had the dealership and having a full main dealer service history on my car then they have agrred to replace wheels at their cost, i just need to pay for the fitting. Very good one satisfied Lexus owner. thanks all