Mercedes-Benz W211, Manual

Page 1: ...1 W211 Dual Battery System W211 Dual Battery System 219 BCM ACB ICC 11 29 02 ...

Page 2: ...ll pertinent instructions when testing diagnosing or making repair Illustrations and descriptions in this training reference are based on preliminary information and may not correspond to the final US version vehicles Refer to the official introduction manual and WIS when available Copyright Mercedes Benz USA LLC 2002 Reproduction by any means or by any information storage and retrieval system or ...

Page 3: ...pre fuse locations Dual battery on board electrical system components systems battery auxiliary battery battery control module auxiliary battery relay cut off relay for interruptible loads Dual battery functional description normal modes failure modes charging auxiliary battery ...

Page 4: ...4 W211 Dual Battery System Function W211 Dual Battery System Function An auxiliary battery supplies electrical energy for a limited time if the systems battery voltage is low ...

Page 5: ...5 Systems Battery G1 Systems Battery G1 Location G1 installed in trunk ...

Page 6: ... Battery G1 W211 Systems Battery G1 Systems Battery 12V 95 Ah 520A DIN Absorbent Glass Mat AGM design also known as Valve Regulated Lead Acid VRLA type Function Primary power source for all vehicle electrical systems ...

Page 7: ...7 Location of Auxiliary Battery G1 7 Location of Auxiliary Battery G1 7 Auxiliary battery installed below air intake of HVAC ...

Page 8: ...8 Location of Auxiliary Battery G1 7 Location of Auxiliary Battery G1 7 Shown with HVAC air intake filter removed ...

Page 9: ...9 Auxiliary Battery 12V 12Ah 170 A DIN Absorbent Glass Mat AGM design Function Provides supplemental power if systems battery G1 voltage is low Auxiliary Battery G1 7 Auxiliary Battery G1 7 ...

Page 10: ...attery Properties AGM VRLA Battery Properties Longer service life Improved cold starting characteristics Improved deep cycle performance No liquid acid spills or leaks Fast recharge time Completely maintenance free ...

Page 11: ...equency and amplitude on the battery posts and monitoring the current flow in response to it Discard the acid density sheet and enter test code recorded by tester on warranty claim forms Battery replaced under warranty must have a test printout attached to the R O Detailed information about testing and using the MCR717 can be found in WIS SI54 10 P 0003 01 ...

Page 12: ...12 Front Front Pre fuse Pre fuse Box Box F32 F32 70 71 72 73 74 75 76 77 Location Passenger footwell ...

Page 13: ...13 Pre fuse Box Pre fuse Box F33 F33 F 3 3 Location Front of spare tire well ...

Page 14: ...7 3 50 A f72 A7 3 150 A f71 M4 7 150 A f70 F32 200 A f78 N10 1 200 A f79 N10 2 150 A f80 N10 1 150 A f81 F34 5 A f84 N82 5 A f85 N112 and A35 11 5 A f86 X58 1 40 A f87 M40 1 f89 Res F33 G2 G1 7 N82 K57 2 G1 M1 Pre fuse Pre fuse Power Distribution Power Distribution ...

Page 15: ... G1 Systems battery G1 7 Auxiliary battery G2 Alternator K57 2 Auxiliary battery relay K67 AIRmatic relay N10 1 Driver signal acquisition and actuation module SAM D N10 2 Rear signal acquisition and actuation module SAM R N10 11 Passenger signal acquisition and actuation module SAM P N22 Air conditioning control module N82 Battery control module M1 Starter motor M4 7 Electric suction fan with inte...

Page 16: ...16 Battery Control Module Battery Control Module N82 N82 Location Rear of spare tire well ...

Page 17: ...tage terminal 61 via CAN B 3 Controls auxiliary battery relay K57 2 4 Controls consumer prioritization function 5 Optimizes charging of auxiliary battery G1 7 6 Notes emergency operation and sets fault codes CAN communication DTC s 7 Notes emergency operation resulting in IC MF fault message displays ...

Page 18: ...ery Relay K57 2 Location Below windshield wiper cowl plastic trim Function Controlled by N82 De energized during normal operation N O Energized to recharge G1 7 Energized if engine running and system voltage low Connects G1 7 to electrical consumers ...

Page 19: ...nterruptible Loads K75 Function Controlled by N82 De energized during normal operation N C Energized during emergency operation Opens 30 15R to cigar lighter R3r1 and 12V socket X58 1 rear of center console during emergency operation K75 Location LF SAM N10 1 K75 or ...

Page 20: ...ent consumption through common ground Consumer prioritization off Relay K57 2 de energized F33 G1 G1 7 M1 G2 K57 2 30 87 F30 E E N82 Kl 30 Kl 31 F32 CAN B F30 Polyswitch fuse F32 Front pre fuse box F33 Rear pre fuse box G1 Battery G1 7 Auxiliary battery G2 Alternator K57 2 Auxiliary battery relay M1 Starter N82 Battery control module ...

Page 21: ...21 Multi Function Display Multi Function Display Fault Messages Fault Messages ...

Page 22: ... in the instrument cluster The auxiliary battery is not engaged until G1 voltage is low If for example N82 determines the load capacity of systems battery G1 is inadequate Stage 1 consumer prioritization via CAN Stage 2 consumer prioritization via CAN if deactivating stage 1 consumers was not adequate The auxiliary battery is connected and the red warning then appears in the instrument cluster ...

Page 23: ...ry relay K57 2 is energized Auxiliary battery is connected for supplying power to electrical consumers Emergency Mode Emergency Mode F33 G1 G1 7 M1 G2 K57 2 30 87 F30 E E N82 Kl 30 Kl 31 F32 CAN B F30 Polyswitch fuse F32 Front pre fuse box F33 Rear pre fuse box G1 Battery G1 7 Auxiliary battery G2 Alternator K57 2 Auxiliary battery relay M1 Starter N82 Battery control module ...

Page 24: ...mary system voltage is above 13 5V Auxiliary battery is charged by alternator through auxiliary battery relay K57 2 This charging cycle will only occur once per ignition cycle F33 G1 G1 7 M1 G2 K57 2 30 87 F30 E E N82 Kl 30 Kl 31 F32 CAN B F30 Polyswitch fuse F32 Front prefuse box F33 Rear prefuse box G1 Battery G1 7 Auxiliary battery G2 Alternator K57 2 Auxiliary battery relay M1 Starter N82 Batt...

Page 25: ...tery System Diagram CAN B Dual Battery System Diagram CAN B N10 1 circuit 61 N73 ignition key inserted N93 diagnosis G1 systems battery sensing N10 2 trunk switch G1 7 auxiliary battery sensing A1 warning messages ...

Page 26: ...ave to be performed Potential systems requiring normalizing are ESP AAC automatic air conditioning Windows and sunroof Left front seat Right front seat Steering wheel and mirrors Adding additional electric accessories When adding accessories always use a power supply that is fused through the pre fuse boxes This will ensure that the BCM can monitor the current consumption accurately DO NOT CONNECT...

Page 27: ... 4201T Auxiliary battery relay location and function GF54 10 P 1001T Two battery vehicle power supply function GF54 21 P 4121 02T Vehicle power supply control module task ETM doc PE54 15 P 2502DA Pre fuse F32 wiring diagram PE54 15 P 2503DA Pre fuse F33 wiring diagram PE54 15 P 2501DA Pre fuse F34 wiring diagram WIS doc Topic Internet Sites www midtronics com Total battery management AGM charging ...