2011 Sienna Noise level

I got this one brand new a few months back and found that the noise level from both electric door are abnormally high, especially when another vehicle is cruising along my side. I drove a Caravan before the Sienna, hence I can compare the noise level between the two vans. I asked the dealer if they can do anything about it, i.e. changing the door guard (the rubber liner around the door frames). They said it cannot be done. What is my option then ? Wonder if other owners have the same experience ?