Hi all.... need some help...Just bought my wife a 98 C230, great car only remote will not unlock or lock doors or open trunk..also central lock button on dash inop and rear head rests not going down....mechanical key will open drivers door and trunk and ignition works fine. windows also work from remote. Previous owner said that all this occured after changing vehicle battery but I am beginning to have my doubts......any help thanks

 

Try in here:
https://mercedesforum.com/m_94313/tm.htm