Mercedes Benz Workshop Manuals > CLS 55 AMG (219.376) V8-5.5L SC (113.990) (2006) > Starting and Charging > Battery > Auxiliary Battery Relay > Component Information > Locations
R230 Dual Battery On-board Electrical System - ww2. Dual Battery On-board Electrical System 218 HO Dual Battery (ACB) 11-28-02. 2 Dual Battery System Tasks ... Dual Battery On-board - [PDF Document]
Red Battery light on dash - on and off. K57 fault? - MBWorld.org Forums
W211 Dual Battery System - Free4 W211 Dual Battery System Function An auxiliary battery supplies electrical energy for a limited time if the systems battery voltage is low. ACB-ICC)11-29-02.pdf2010-10-26 - [PDF Document]