I have 2 420 SELs and on both of them the fuse that controls the power door locks and the power antenna blows the second I put a new fuse in. I cannot locate the problem. I have other 126 sedans a 300SD and 560SEL neither of them have that problem so I think it might just be a 420 issue. If anyone has had a similar problem and has found the solution please email me. Thanks Benzoic