BMW 5 Series | Water Leak Repair

BMW 5 Series | Water Leak Repair
Apr
22
2022

This car had had wet carpets throughout the passenger side and came to us for drying after being repaired at a garage.

We are well aware of the problem with the BMW 5 Series, there is a blanking plate in the bulkhead which corrodes and lets in water which then floods the front passenger foot well. The customer had had this repaired at a local garage and asked us to dry the car. We became suspicious when we found the rear seat wet, because water generally doesn't flow up-hill, and so it was unlikely the bulkhead leak was the cause of the problem.

We did a full water leak inspection and discovered the rubber around the boot was leaking. Furthermore, we also found that the bulkhead/scuttle area had not been cleaned. This is essential because the blanking plate typically leaks because these drainage holes are blocked, so the water instead finds it's way out through the hole that the blanking plate is designed to cover.

The plate had been sealed with silicone sealer, which is not the right product for the job, so we cleaned it all out and resealed the plate properly, resealed the rubbers around the boot, dried and decontaminated the car and addressed the damp odours of mould and mildew.

The customer decided to take advantage of our special offer,  have a polish and  car paint protection.
We cleaned and machine polished the car before giving it a coating of Diamas Professionali -  our diamond coating.

There were a few other little issues, the rear bumper had some scuffs which could be smart-repaired, but for the time being we polished out what we could and did cosmetic repairs. We promise about a 60% improvement, but usually do better and as they are low down on the car, they aren't nearly as obvious as you see here with us pointing the camera right at them. Sometimes, there is a time constraint, and if we painted the bumper, the paint needs time to dry before applying a coating, it could add days to the process which can be a problem when the customer lives the other side of the country, or in another country. This customer came to us from Manchester.

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