2L8ULUZ

I have a 12 e350 blue efficiency and was told by my local Indy, that all it does is allow the car to shift into gears when the main battery dies. Is this correct? Does it power any additional vehicle features? The car does not seem to have the start/stop function. So what happens if your car dies and it cannot be started? Does the main battery still allow for changing gears as long as it has juice? What would happen if the main battery is dead and the car needs to be towed with a 4matic, its just dragged off the road?? LOL

Also, can someone explain to me the Blue E Alternator function? So, it collects kinetic energy during braking, but where does this energy go and how does this benefit the car?

Appreciate the feedback guys/gals!!!

Build Sheet:

Chassis

Sales designation: E 350 4MATIC
Order number: 0 2 706 01651
Delivery date: 25 10 2011
Market: NA,North America
Production order: N

Paint code 1:
650U CALCITE WHITE - STANDARD FINISH
Equipment:
105A IMITATION LEATHER - BEIGE
Engine no.:
276952 30 073256
Major assembly variant: A 276 010 40 44
Part var. design.:
Text
Transmission:
722960 03 716903 [transmissionType = GA]
Steering:
Front axle 1:
Rear axle 1:
Rear axle 2:
Battery 1:
Fuel cell 1:
Electric motor 1:

SA code01R 088 STEUERCODE 330 X 32 - BREMSE BEI 18 ZOLL BEREIFUNG100A IMITATION LEATHER105A IMITATION LEATHER - BEIGE108 CONTROL CODE MARKETING1U2 SNOW GRID211 EPS STEERING (ELECTRIC STEERING)212B OP. INSTRUCT. AND MAINT. BOOKLET-ENGL. FOR USA/CAN218 REAR-VIEW CAMERA232 GARAGE DOOR OPENER WITH 284 - 390 MHZ FREQUENCY240 LED DAYTIME RUNNING LIGHTS249 INTERIOR AND EXTERIOR MIRROR,AUTOMATICALLY DIMMING264 LICENSE PLATE ATTACHMENT AMERICA265 LINES-NO.PLATE DISCONTINUED275 MEMORY PACKAGE (DRIVER SEAT, STRG. COL., MIRROR)279 ELECTRONIC GEAR RANGE SELECTION284B AIRBAG LABEL - ENGLISH FOR USA287 THROUGH-LOADING FEATURE291 PELVIS AIRBAG (PELVISBAG)294 KNEE AIRBAG301 ASHTRAY PACKAGE309 CUP HOLDER312B HEAD UNIT LANGUAGE - AMERICAN ENGLISH342B INSTRUMENT CLUSTER/HU LANGUAGE - AMERICAN359 TELEAID USA414 ELECTRIC TILT/SLIDE SUNROOF IN GLASS VERSION427 AUTOMATIC TRANSMISSION 7-SPEED428 STEER.WHEEL GEARSHIFT BUTTONS/SHIFT PADDLE PAINTED461 INSTRUMENT WITH MILES IND. AND ENGLISH LEGEND475 TIRE PRESSURE CONTROL494 U.S. VERSION518 UNIVERSAL COMMUNICATIONS INTERFACE (UCI)51U BLACK FABRIC ROOF INTERIOR TRIM527 COMAND DVD APS WITH NAVIGATION536 SIRIUS SATELLITE RADIO COMPLETE SYSTEM540 ROLLER BLIND, ELECTRIC, FOR REAR WINDOW543 SUN VISOR WITH ADDITIONAL FUNCTION551 BASIC ANTITHEFT ALARM SYSTEM (ATA)580 AIR CONDITIONER634 DELETION - FIRST AID KIT636 DELETION - WARNING TRIANGLE650U CALCITE WHITE - STANDARD FINISH668 PRODUCT PROT. F FREIGHT PACKAG. W TIE-DOWN HOOKS677 AVANTGARDE/STANDARD SUSPENSION690 EMERGENCY SPARE TIRE (MINI SPARE)705L UNITED STATES (USA)731 TRIM PIECES - WOOD BURRED WALNUT VENEER763 RADIO REMOTE CONTROL WITH PANIC SWITCH (315 MHZ)772 AMG STYLING PACKAGE-FRONT SPOILER, SIDE SKIRT7XXL NORTH AND SOUTH AMERICA802 810 PREMIUM SOUND SYSTEM873 SEAT HEATER FOR LEFT AND RIGHT FRONT SEATS875 HEATED SCREEN WASH SYSTEM887 SEPARATE TRUNK LID LOCKING915 FUEL TANK WITH GREATER CAPACITY - VOLUME 2919 AIRCON COOLING POWER PACKAGE951 SPORT-PACKAGE USA954 EQUIPMENT PACKAGE FOR AVANTGARDE VEHICLES986 DEVIATING VIN WITH MODEL YEAR989 IDENTIFICATION LABEL UNDER WINDSHIELDA21 SHIFT BY WIREA31 SOFTWARE (INDIVIDUAL)A63 FE TORQUE CONVERTER HOUSING-0A64 FE CONVERTER 0 MMA68 TRANSMISSION HOUSING WITH DEEP OIL LINE CONNECTIONA87 U VALVE BODY ASSEMBLY WITH VGS 3A89 REDUCED-FRICTIONB12 WHEEL REPLACEMENT TOOLF212 MODEL SERIES 212FW LIMOUSINEG960 TRANSMISSION CODE VERSION 60GA AUTOMATIC TRANSMISSIONHA REAR AXLEJ1A NAT2 WITH OPTIMIZED DSMJ81 JUNE RELEASEK15 CONTROL CODE FOR SERVICE INTERVAL 15000 KML LEFT-HAND STEERINGM005 VEHICLES WITH 4-MATIC-/ALL WHEEL DRIVEM276 V6-GASOLINE ENGINE M276M35 DISPLACEMENT 3.5 LITERR02 ALL SEASON TYRESU10 FRONT PASSENGER SEAT WITH WEIGHT SENSINGU12 FLOOR MATS - VELOURU71 DVD PLAYER WITH REGIONAL CODE 1, USAV04 SPEED. + LOADINDEX 97V XLVL FRONT AXLE HALF, LEFTVR FRONT AXLE HALF, RIGHT650U CALCITE WHITE - STANDARD FINISH105A IMITATION LEATHER - BEIGEM276 V6-GASOLINE ENGINE M276

Left Coast Geek

the smart alternator does not store energy, but it does reduce the alternator output to save fuel economy as long as your battery is reasaonbly charged.

on a non-eco stop/start car, the aux battery's main function is to power the electronics when the car is being started, because the starter motor can drag the main battery down to 9V during cranking, this is too low for the engine management computers to reliably run.

bmwpowere36m3

I think your confusing ECO models... W212s with ECO use the auxiliary battery to carry the convenience loads during an ECO stop. Earlier non-ECO models, from what I've seen, the auxiliary battery powers the EIS (IIRC). Its main function is allowing shifting if main battery dies.

Many older MBs do not have auxiliary batteries and they start just fine. I'd speculate the PS of the ECU is designed to handle transients with caps or equivalent.

Left Coast Geek

if the main battery on a car as electronic as any of these 212's dies, the car stops right there.

bmwpowere36m3

okay… are you suggesting the battery dies when you start the engine?

kajtek1

MB is not good in informing customers about features that customer doesn't need to know.
You don't see oil pressure, nor oil temperature, although some drivers are missing those on newer cars.
With several different systems using 2nd battery, it can be pretty confusing, but most common knowledge is, that in early W212 (no ECO stops) the small battery in dashboard operate electric gear shifter and electric steering.
Still, even I like to know what I have under the hood, I did not pull my hairs over that.

2L8ULUZ

I guess I need to replace my bad aux!!

Thanks guys!!

bmwpowere36m3

You'll get a warning in the cluster the aux battery is malfunctioning... i.e., needs replacement most of time. What are your symptoms?

S. Madman

The button in the US cars is still there (blank), but the function works in Europe. At least in Germany.

pierrejoliat

[QUOTE=2L8ULUZ;8407697]I have a 12 e350 blue efficiency and was told by my local Indy, that all it does is allow the car to shift into gears when the main battery dies. Is this correct? Does it power any additional vehicle features? The car does not seem to have the start/stop function. So what happens if your car dies and it cannot be started? Does the main battery still allow for changing gears as long as it has juice? What would happen if the main battery is dead and the car needs to be towed with a 4matic, its just dragged off the road?? LOL

Also, can someone explain to me the Blue E Alternator function? So, it collects kinetic energy during braking, but where does this energy go and how does this benefit the car?

Appreciate the feedback guys/gals!!!

Correct, in your model year the auxiliary battery is in the left dash, looks like an alarm battery and allows the car to be shifted into neutral to tow it, that's about it. Tow trucks that tow Benz's have a wheel attachment that allows the car to be hoisted onto a flatbed.

Blue efficiency alternator runs when coasting and super charges when braking, the process is complicated, look for posts from Cali Benz or S Prihadi, they have covered this exhaustively with everything you could ever want to know and more!