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post #21 of 32 (permalink) Old 04-14-2019, 01:30 PM
 
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Any progress to report? We are definitely interested in what happened...
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post #22 of 32 (permalink) Old 04-14-2019, 06:30 PM Thread Starter
 
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Nothing yet... Have had no real time...Life and work keep getting in the way ! Looked at several scanners but it seems no one can tell me for sure witch one to get ( ie... if it will reset the drive codes ect. )
Does anyone know what scanner I should get ? my budget is about $1200.00 us .
I will be talking to the dealer this week to see what they recommend ( scanner wise )


I have received the Battery monitor but have not had the time to try it .....



Cheers Bruce
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post #23 of 32 (permalink) Old 04-15-2019, 05:55 PM
 
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I'd like to know what you fins out about the scanner. I was under the maybe-wrong impression that the ED is not like an IC engine car where you can just cancel a fault detection code from a OBD scanner. If that were the case, you would be able to just disconnect the battery or pull a fuse for a few minutes to cancel the codes like an IC engine car.
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post #24 of 32 (permalink) Old 04-15-2019, 07:00 PM Thread Starter
 
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I will be letting everyone know, as soon as I can get the right one ... It gets a little frustrating when you get techs from the same company saying ; 1) Our scanner will do that....and then 2) No our scanner can not do that yet ! But I have some hope that I will find the right Info soon ....
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post #25 of 32 (permalink) Old 04-21-2019, 03:06 PM Thread Starter
 
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..HERE IS THE DATA I need some help with interpitation..................................... ..
Connect to OBD port - Waiting for CAN-Bus
.........................................
Connect to OBD port - Waiting for CAN-Bus
.........................................
Connect to OBD port - Waiting for CAN-Bus
.CONNECTED
-----------------------------------------
........Reading data....................OK
-----------------------------------------
Battery VIN: WMEEJ9AA0EK781713
Time [hh:mm]: 10:38, ODO : 70111 km
-----------------------------------------
Battery Status : FAULT

Battery Production [Y/M/D]: 2014/1/27
Battery-FAT date [Y/M/D]: 2014/1/28
Rev.[Y/WK/PL] HW:2013/29/0, SW:2014/18/0
-----------------------------------------
SOC : 127.5 %, realSOC: 102.3 %
HV : 1024.0 V, -1024.00 A, -9.73 kW
LV : 10.6 V
-----------------------------------------
CV mean : 65535 mV, dV = 0 mV
CV min : 1499 mV
CV max : 1499 mV
OCVtimer: 2712 s
-----------------------------------------
Last measurement : 3 day(s)
Measurement estimation: 0.656
Actual estimation : 0.596
CAP mean: 18419 As/10, 51.2 Ah
CAP min : 0 As/10, 0.0 Ah
CAP max : 0 As/10, 0.0 Ah
-----------------------------------------
HV contactor state OFF, for: 0 s
Cycles left : 292861
of max. cycles: 300000
DC isolation : 65535 kOhm, DC FAULT
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 327.7, 327.7, 327.7
module 2: 327.7, 327.7, 327.7
module 3: 327.7, 327.7, 327.7
mean : -512.0, min : -512.0, max : -512.0
coolant : 10.2
-----------------------------------------
# ;mV ;As/10
01;65535;18585
02;65535;18585
03;65535;18686
04;65535;18686
05;65535;18754
06;65535;18686
07;65535;18822
08;65535;18857
09;65535;18754
10;65535;18822
11;65535;18891
12;65535;18788
13;65535;18652
14;65535;18754
15;65535;18652
16;65535;18619
17;65535;18652
18;65535;18585
19;65535;18552
20;65535;18619
21;65535;18822
22;65535;18822
23;65535;18891
24;65535;18822
25;65535;18857
26;65535;18788
27;65535;18754
28;65535;18619
29;65535;18619
30;65535;18720
31;65535;18652
32;65535;18754
33;65535;18686
34;65535;18754
35;65535;18822
36;65535;18754
37;65535;18857
38;65535;18720
39;65535;18754
40;65535;18754
41;65535;18788
42;65535;18585
43;65535;18686
44;65535;18686
45;65535;18652
46;65535;18619
47;65535;18652
48;65535;18788
49;65535;18788
50;65535;18754
51;65535;18822
52;65535;18822
53;65535;18788
54;65535;18686
55;65535;18619
56;65535;18720
57;65535;18754
58;65535;18619
59;65535;18686
60;65535;18857
61;65535;18652
62;65535;18585
63;65535;18619
64;65535;18686
65;65535;18754
66;65535;18788
67;65535;18754
68;65535;18788
69;65535;18891
70;65535;18857
71;65535;18857
72;65535;18754
73;65535;18822
74;65535;18857
75;65535;18891
76;65535;18891
77;65535;18822
78;65535;18822
79;65535;18891
80;65535;18891
81;65535;18822
82;65535;18652
83;65535;18822
84;65535;18720
85;65535;18822
86;65535;18585
87;65535;18652
88;65535;18788
89;65535;18686
90;65535;18822
91;65535;18754
92;65535;18619
93;65535;18686
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 65535 mV, dV= 0 mV, s= 0.00 mV
CV min : 65535 mV, # 1
CV max : 65535 mV, # 1
-----------------------------------------
CAP mean: 18741 As/10, 52.1 Ah
CAP min : 18552 As/10, 51.5 Ah, # 19
CAP max : 18891 As/10, 52.5 Ah, # 11
-----------------------------------------
Voltage Distribution (dV= 0 mV):
*---------------------------------------*
65535 00 > [65535; 32767; 65535] < 00 65535
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 204 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 10.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 12.4 degC
Cooling fan : 0.0 %
Cooling pump : 78.8 %, 15 degC
: 9.8 V, 3.8 A
OTR:
Cooling fan : 11 h
Cooling pump : 10922 h
Battery heater: 0 h, OFF
Vaccum pump : 56.825 h
Pressure 1, 2 : -683 mbar, -677 mbar
-----------------------------------------

* All measurements captured *


-----------------------------------------
Battery VIN: WMEEJ9AA0EK781713
Time [hh:mm]: 10:38, ODO : 70111 km
-----------------------------------------
SOC : 127.5 %, realSOC: 102.3 %
HV : 1024.0 V, -1024.00 A, -9.73 kW
LV : 10.6 V
-----------------------------------------
ENTER command... (? for help)
CMD >>
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post #26 of 32 (permalink) Old 04-21-2019, 03:32 PM
 
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Sorry to say, but except for the "FAULT" status for the battery pack, the scan produced nonsensical result -for example the exactly 65.535V for every cell (normal is 3.5 to 4.2) and 127.5% SOC.


However, that LV value (the 12V batter voltage) of 10.6 volts might be real, which would indicate that it is rather discharged or bad.

Last edited by Yinzer; 04-21-2019 at 08:29 PM.
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post #27 of 32 (permalink) Old 04-21-2019, 05:27 PM Thread Starter
 
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The 12v battery is not a big concern as it just needs charged...been trying different things and I need the ignition on . Drains the battery.
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post #28 of 32 (permalink) Old 04-21-2019, 08:28 PM
 
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It should not drain it that much. 10.6 Volts on a 12V lead acid battery is pretty much totally discharged.

At any rate, the traction pack diagnostics is apparently not able to access the cell voltages or the BMS to produce any useful information.

We need to put out a bulletin requesting other's experiences long term storage of Smart ED's, becasue we also have a current case very similar to yours but without any low temperatures involved (Seattle). I had thought that in the past, people stored Smart EDs without problems. In fact, we had recommended storing the car with the pack at 60-80 percent becasue sitting at a 100% SOC is not so good for lithium cells.

A possible hypothesis is that there is something (software bug?) that is causing the BMS to drain the pack to the point that the (probably over-conservative) safety limits trip and brick the pack.

The sad thing is, don't expect any support from Mercedes Benz. They have totally blown Smart owners off.
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post #29 of 32 (permalink) Old 04-22-2019, 05:46 AM
 
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65535mV is an erroneous reading.

(It's an unsigned 16-bit integer "-1", a typical error value programmers choose. 16 bits unsigned can represent numbers from 0 to 65535 or -32768 to +32767. If you assign a -1 [bit pattern of 32 bits all set to 1] and interpret it as an unsigned, you get 65535.)

That all the cells are reporting it is likely an indication of something you already know: the battery is a protection/shut-down state.
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post #30 of 32 (permalink) Old 04-22-2019, 09:36 AM
 
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The unfortunate issue is that even if it is an erroneous battery protection fault and the cells themselves are fine (a possible but unlikely condition in my opinion), the MB service personnel treat the battery unit as a black box and will only offer to replace the whole expensive thing - if it is still available at all.


Here in the US the Clean Air Act/EPA mandates a 8-year, 80k mile warranty for all emissions-related components in cars. This has been interpreted as also applying to EV batteries - as their battery-electric drivetrain is, in effect, a "emission control". But if you look in your warranty booklet, Smart has, contrarily and sleazy-lawyerly (if that a word) interpreted it the opposite way for the Smart 451. They claim because the Smart ED produces no emissions, it cannot have emission controls, ergo, no extended warranty on anything. The fact that the newer Smart 453 EQ DOES have an 8-year warranty suggests that the EPA informed them that they cannot interpret the regulation in this way. One would therefore think that they would have been required to grandfather this regulatory determination to include the older model, but maybe not, or they have somehow evaded notifying owners about it. But one thing for sure, it should be a pretty easy class-action lawsuit to force MB to grandfather the 8-year warranty.


This is the US, but Canada usually goes out of their way to harmonize their automotive regulations with the US, or are more stringent (for example, mandatory daytime running lights). So I'd recommend that you do some research and think about building a case for getting the battery replaced under warranty. I hope you don't live in Ontario and have to deal with their current EV hostile government though.
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