*mercedes benz auxiliary battery 12ah - 12v*
small backup battery for mercedes benz w204, w212, w205, w213, w166, w167, w177, glc, gle.
*what it does:*
- powers eco start/stop system
- powers gear shift when main battery fails
- keeps safety systems (abs, esp) stable during start
*signs it is dead:*
- dashboard: "auxiliary battery malfunction"
- eco start/stop not working - yellow light
- car stuck in p, can't shift to d
*specification:*
- 12v 12ah 200a agm
- size: 150 x 90 x 145mm
- part no: a / a /
- brand: varta / bosch / fb germany (same as original)
is your car showing malfunction on dashboard? which model is your benz?