2021 Discovery LXE 40M

Every few days we have to clean a dusty residue that accumulates on the rear bathroom counters (and probably all other surfaces).  I can only think of two possibilities. A/C unit or outside dirt from road or engine. A/C unit return filters are clean. I will be keeping a closer eye on how this residue is appearing but thought I'd ask to see if anyone else has experienced this issue. Thanks!!

Thanks for the response. I agree with you. We have eliminated the A/C. We cleaned the counters before a 5 hr drive and they were dirty when we arrived. No A/C was used. Now to try to figure out the entry spot and seal it off. 

Douglas Hershey wrote:

2021 Discovery LXE 40M

Every few days we have to clean a dusty residue that accumulates on the rear bathroom counters (and probably all other surfaces).  I can only think of two possibilities. A/C unit or outside dirt from road or engine. A/C unit return filters are clean. I will be keeping a closer eye on how this residue is appearing but thought I'd ask to see if anyone else has experienced this issue. Thanks!!

Yes, I have the same problem.  I think it's brake dust.  Leaves a fine coat on everything.  Any ideas about this would be helpful

Douglas Hershey wrote:

Thanks to everyone who responded. We head south in a few weeks. I plan to use painters tape along areas that could be allowing road dirt/brake dust, etc to pass through. Will try process of elimination to try to find where dust is passing through. I’ll post if I figure anything out. 

Do you have bunk beds in the very back on top of motor?  We do and the dust comes from around the frame of the bed.