Bayern are still looking for a first win of term, but the champions showed grit and resolve to battle back for a point in Dortmund after Mark van Bommel's early sending off.
The vast 80,552 capacity crowd at Signal Iduna Park saw Kuba Blaszczykowski hammer the home side into a ninth-minute lead, and worse was to come for the champions when Mark van Bommel received his marching orders for a second bookable offence midway through the first half. But Bayern never stopped trying in an incident-packed encounter, and Tim Borowski crowned an inspirational display after coming on as a half-time sub by poking home through a forest of legs to level things up with quarter of an hour remaining.
The result means Munich are without a win after two league matches for the first time in nearly a decade, but the Bavarians will be confident of rectifying the situation when Hertha Berlin visit the Allianz Arena next Sunday.
Toni returns
Bayern boss Jürgen Klinsmann made three changes to the side held 2-2 by Hamburg in the season opener. Fit-again Hamit Altintop replaced Toni Kroos, Luca Toni made a first start of term in place of Lukas Podolski, and Andreas Ottl stepped in at the last minute after Ze Roberto broke down in the warm-up.
With Martin Demichelis also not yet fit enough for the matchday squad, that meant the champions named only six subs, including 22-year-old reserve defender Georg Niedermeier.
For his first home game in charge, BVB coach Jürgen Klopp fielded a side featuring midweek signing Mohamed Zidan and young Mats Hummels, now in his second season on loan from FCB.
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