Same problem here. Rear window worked on my 2004 T4r and after a battery change, everything works except the remote operating the rear window. I’ll keep searching.
My ‘04’ t4r Ltd v8 having this problem. Will try the gas cap deal, but my mechanic told me I have a cracked manifold where it attaches to the Head causing quite a “ticking” sound. Typical problem with the v8, maybe v6 also. That can create an exhaust leak and trip a Cel if it progresses and get...