Alternate location for Comfort/Convenience Relay? 99 C280
 

My relay is going bad (seats are intermittent) but the dealership and I have been unable to locate the relay.

It isn't in the usual spot under the plastic panel in the forward section of the trunk under the carpet - the dealer guys searched for a half-hour but no luck.

Help!

I'm not 100% certain but I think it may be under the rear seat on the left side.

The dealer guys pulled the rear seat bottom - no relay. Can't imagine it being under the backrest portion....