The battery is housed inside the telematics (BTA) module. On most Peugeot 2008 models, this unit is located behind the dashboard/glovebox area or within the overhead console . Accessing it often requires removing interior trim panels .
It is an EU safety regulation (UN ECE R144). Every modern car has this backup battery—not just Peugeot. Fiat, Citroen, Opel, and BMW also suffer from this exact failure. peugeot 2008 sos battery replacement
Temporarily, yes. But the fault will return within a few drive cycles because the backup battery still fails the internal self-test. The battery is housed inside the telematics (BTA) module