Keyless Entry Card For Hs

[lubelira]

have one of those few hs's with a key card in additon to the standard keyless keys.. the card has just had second pair of new batteries installed and is still not always recognzied at trunk and even less frequently not recognzied at the ignition. command says touch ignition with the key card for activation... any have any suggestions as to what the problem could be? dealer is stumped as it is too intermittent to be diagnosed...