| 1 | SUN ROOF DRAINAGE CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check the sunroof drainage pipes.In particular, check: pipe condition;for dirt, leaves etc.
 | Move on to Step 2 | Dirt in the drains. | Clean the guides with a vacuum cleaner and reapply grease if necessary using Molikote PG75 in the mechanism slide area.If necessary, restore the correct fitting.    Op. 7030B38 SLIDING ROOF DRAINAGE PIPES (WATER DRAIN) - CHECK | 
| 2 | SUN ROOF SEAL CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check the sun roof seal..In particular, check: for kinks in the seal;the condition of the seal.
 | Move on to Step 3 | Seal fitting faulty | Refit the seal correctly    Op. 7030B22 GLASS SEAL - R+R WITH GLASS REMOVED | 
| 3 | SUN ROOF ALIGNMENT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check that the sun roof is fitted correctly.In particular, check: correct alignment of the roof - compartment;seal adheres correct to the roof.
 | Move on to Step 4 | Faults with the sun roof installation. | Check that the sun roof is fitted correctly.    Op. 7030B17 SUN-ROOF GLASS - ALIGNMENT | 
| 4 | CHECK THE SEAL OF THE SUNROOF SLIDE BOLTS | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check the seal of the bolts securing the slides to the sunroof structure. | End of diagnosis | Incorrect bolt fastening. | Restore the correct fastenings of the slides to the sunroof structure and check for the seal |