BMW fault code A3C5
Instrument cluster
In the instrument cluster, code A3C5 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
SECURITY2_ALIVE_ERROR
Module versions: Instrument cluster (KOMB65_2), Instrument cluster (KOMBI65)
In: 7 Series (E65) 2001–2008, 7 Series (E66) 2002–2008, 7 Series (E67) 2002–2008
Instrument cluster: High-security vehicle 2
Module versions: CLUSTER instrument cluster RR (KOMBRR), CLUSTER instrument cluster RR_2 (KOMBRR_2)
In: 7 Series (E65) 2001–2008, 7 Series (E66) 2002–2008, 7 Series (E67) 2002–2008
Message (Alive counter, 0xBE) faulty, receiver KOMBI, transmitter ARS
Module version: Instrument cluster (KOMB60)
In: 1 Series (E87) 2004–2011, 1 Series (E82) 2007–2013, 1 Series (E81) 2007–2011, 1 Series (E88) 2008–2013, 3 Series (E91) 2005–2012, 3 Series (E90) 2005–2012, 3 Series (E92) 2006–2013, 3 Series (E93) 2007–2013, 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010, 7 Series (E65) 2001–2008, 7 Series (E67) 2002–2008, 7 Series (E66) 2002–2008, X1 (E84) 2009–2015, X5 (E70) 2006–2013, X6 (E71) 2008–2014, X6 (E72) 2009–2011, Z4 (E89) 2009–2016
Reading and clearing it
Fault code A3C5 is a BMW code, stored in the car's instrument cluster, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The instrument cluster is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), 1 Series (E81), 1 Series (E82), X1 (E84), 1 Series (E87), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)
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