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  #41  
Old 12-04-2018, 08:49 PM
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Canbus bulbs came in. They literally are like the LED A19 bulb equivalents in that they got some serious weight to them for a set of bulbs. I guess there is quite a bit of electronics in it.
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  #42  
Old 12-04-2018, 09:21 PM
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Quote:
Originally Posted by wpoll View Post
It most likely is the after-market wiring...

The BFD feature is provided via PWM to the top lamp. The lamp is a 12v 21W single filament lamp and as a tail lamp it has a PWM pulse duty-cycle of about 20-30% - which makes the 21W lamp glow dimly like 5W or 10W tail lamp. When the BDF lighting is called for, the PWM duty-cycle changes up to about 90-100%, so the lamp glows like a 21W (brighter!).

LEDs cannot easily vary their brightness, although oddly enough the best way to dim LEDs is with PWM, but not quite the same system that BMW use on the OEM tails. So the after-market LED tails glow the same regardless of the PWM duty-cycle. The manufacture then has to wire them such that they are either on or off - possibly in groups to provide both tail and brake lighting behind the same lens. And the capacitors that are used to removed the "flicker" (which act as averaging devices) also screw up any chance of using BMW's PWM on after-market tails.

I'm guessing this is why there are so many after-market LED tail options for pre-facelift cars (which don't use PWM) and hardly any for facelift cars - it's just too hard for the after-market manufacturer to deal with the PWM.
Is there not a coding option for LED tails in the LCM ? Or even to be able to disable adaptive brake lights so that the tail and brake lite circuits act seperately?
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  #43  
Old 12-04-2018, 09:46 PM
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Quote:
Originally Posted by 80stech View Post
Is there not a coding option for LED tails in the LCM ? Or even to be able to disable adaptive brake lights so that the tail and brake lite circuits act seperately?
Not sure, 80stech.

It's possible that the LCM could be coded to split the lamp functions or disable the BFD lighting feature but extensive searching hasn't shown up any mention of that option.

And as for a LED lamp option via coding - I very much doubt it. The PWM power/control system requires the very slow delta rate of incandescent lamps to function as designed - I cannot see the BMW engineers adding an option for LEDs (which have a VERY fast delta rate!).
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  #44  
Old 12-05-2018, 09:48 AM
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I don't have LED taillights and can't be sure this would work but both coding options requested do seem to be available in NCS Expert. Again, not sure about how these functions operate, I can not validate them.
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  #45  
Old 12-05-2018, 04:25 PM
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Originally Posted by Overboost View Post
I don't have LED taillights and can't be sure this would work but both coding options requested do seem to be available in NCS Expert. Again, not sure about how these functions operate, I can not validate them.
Wow - who knew?

OB, you inspired me to look a little deeper and I've since found a ton of BFD display coding options: -

BFD2_SL_BL_1
BFD2_SL_BL_2
BFD2_T_ABS
BFD2_V_MIN Brake force display minimum speed
BFD3_ASC_AKTIV
BFD3_ASC_TIMER
BFD_1_ALGORITHMUS Brake force display stage 1 algorithm
BFD_1_BFD_AUSG_ERSCH_BILD
BFD_1_BL_2_ERSCH_BILD Brake force display stage 1 brake lights 2 appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_BL_M_ERSCH_BILD Brake force display stage 1 third brake light appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_BLINK_FREQ_AUS Brake force display stage 1 flash frequency off [time_ms=(data*40)+100]
BFD_1_BLINK_FREQ_EIN Brake force display stage 1 flash frequency on [time_ms=(data*40)+100]
BFD_1_CODIERDATEN Brake force display stage 1 coding data
BFD_1_DEAKTIV_BEI_NSL Brake force display stage 1 not simultaneously with rear fog lights
BFD_1_ENTPRELL_ABS Brake force display stage 1 debouncing antilock braking system (ABS) signal [data>0 ? time_ms=data*80 : do not use ABS signal]
BFD_1_ENTPRELL_AX Brake force display stage 1 debouncing deceleration signal [time_ms=data*40]
BFD_1_MIN_GESCHW Brake force display stage 1 minimum speed
BFD_1_MIT_BFD Brake force display stage 1 with brake force display
BFD_1_MIT_BL Brake force display stage 1 with brake lights
BFD_1_MIT_BL_M Brake force display stage 1 with third brake light
BFD_1_MIT_FRA_H Brake force display stage 1 with rear turn signals
BFD_1_MIT_NSL Brake force display stage 1 with rear fog lights
BFD_1_MIT_RL_BL Brake force display stage 1 with tail lights
BFD_1_MIT_RL_BL_1 Brake force display stage 1 with outer tail lights
BFD_1_MIT_RL_BL_2 Brake force display stage 1 with inner tail lights
BFD_1_MIT_SL_1 Brake force display stage 1 with standing lights 1
BFD_1_MIT_SL_2 Brake force display stage 1 with standing lights 2
BFD_1_NSL_ERSCH_BILD Brake force display stage 1 rear fog lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_RL_BL_1_ERSCH_BILD Brake force display stage 1 outer tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_RL_BL_2_ERSCH_BILD Brake force display stage 1 inner tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_RL_BL_ERSCH_BILD Brake force display stage 1 tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_1_STUFE_DELAY Brake force display stage 1 stage delay [time_ms=data*10]
BFD_1_THERM_TIMEOUT Brake force display stage 1 thermal timeout
BFD_1_WEGFALL Brake force display stage 1 cancelation [nicht_aktiv: by brake light switch, aktiv: by conditions]
BFD_1_WERT_AX_EIN Brake force display stage 1 deceleration threshold
BFD_1_WERT_AX_RUCK Brake force display stage 1 deceleration threshold for initial jolt
BFD_2_ALGORITHMUS Brake force display stage 2 algorithm
BFD_2_BFD_AUSG_ERSCH_BILD
BFD_2_BL_2_ERSCH_BILD Brake force display stage 1 brake lights 2 appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_BL_M_ERSCH_BILD Brake force display stage 1 third brake light appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_BLINK_FREQ_AUS Brake force display stage 2 flash frequency off [time_ms=(data*40)+100]
BFD_2_BLINK_FREQ_EIN Brake force display stage 2 flash frequency on [time_ms=(data*40)+100]
BFD_2_CODIERDATEN Brake force display stage 2 coding data
BFD_2_DEAKTIV_BEI_NSL Brake force display stage 2 not simultaneously with rear fog lights
BFD_2_ENTPRELL_ABS Brake force display stage 2 debouncing antilock braking system (ABS) signal [data>0 ? time_ms=data*80 : do not use ABS signal]
BFD_2_ENTPRELL_AX Brake force display stage 2 debouncing deceleration signal [time_ms=data*40]
BFD_2_MIN_GESCHW Brake force display stage 2 minimum speed
BFD_2_NSL_ERSCH_BILD Brake force display stage 1 rear fog lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_RL_BL_1_ERSCH_BILD Brake force display stage 1 outer tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_RL_BL_2_ERSCH_BILD Brake force display stage 1 inner tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_RL_BL_ERSCH_BILD Brake force display stage 1 tail lights appearance [nicht_aktiv: off, wert_01: on, wert_03: flashing]
BFD_2_STUFE_DELAY Brake force display stage 2 stage delay [time_ms=data*10]
BFD_2_THERM_TIMEOUT Brake force display stage 2 thermal timeout
BFD_2_WEGFALL Brake force display stage 2 cancelation [nicht_aktiv: by brake light switch, aktiv: by conditions]
BFD_2_WERT_AX_EIN Brake force display stage 2 deceleration threshold
BFD_2_WERT_AX_RUCK Brake force display stage 2 deceleration threshold for initial jolt
BFD__ESS
BFD_ABS_STUFE2 Brake force display stage 2 activated by antilock braking system (ABS)
BFD_ABS_STUFE2_LM2 Brake force display stage 2 activated by antilock braking system (ABS)
BFD_ABS_STUFE3 Brake force display stage 3 activated by antilock braking system (ABS)
BFD_ALGORITHMUS Brake force display algorithm
BFD_ASC_REG
BFD_AX_REF Brake force display deceleration
BFD_AX_REF_SCHWELLE Brake force display deceleration threshold
BFD_AX_REF_SCHWELLE_2 Brake force display deceleration threshold 2
BFD_BLINK_AUSZEIT Brake force display flash on period
BFD_BLINK_EINZEIT Brake force display flash off period
BFD_BREMSL_FKT Output brake force display as brake lights
BFD_CODIERDATEN Brake force display coding data
BFD_ERS_DEF_RL_BL Brake force display replaces defective tail light
BFD_ERS_DEF_RL_BL_1 Brake force display replaces defective outer tail light
BFD_ERSCHEINUNGS_BILD
BFD_ERSETZT_BL Brake force display replaces defective brake light
BFD_ERSETZT_RL_BL Brake force display replaces defective tail light
BFD_ERSETZT_RL_BL_1 Brake force display replaces defective outer tail light
BFD_ERSETZT_SL_1 Brake force display replaces defective standing light
BFD_FKT_PARKL Brake force display with parking lights
BFD_GESPERRT_BEI_NSL Brake force display not simultaneously with rear fog lights
BFD_HYSTERESE Brake force display hysteresis
BFD_MIN_GESCHW Brake force display minimum speed
BFD_MINDEST_GESCHW Brake force display minimum speed
BFD_ON Brake force display on
BFD_OPTION Brake force display option
BFD_SCHWELLE Brake force display threshold
BFD_ST3_ON
BFD_STUFE2_TIMER Brake force display stage 2 timer
BFD_STUFE3_TIMER Brake force display stage 3 timer
BFD_STUFE_2_MAX_EIN
BFD_STUFE_2_VERZOEG Brake force display stage 2 delay
BFD_SW1_STUFE2 Brake force display stage 2 activated by deceleration sensor 1
BFD_SW1_STUFE2_LM2 Brake force display stage 2 activated by deceleration sensor 1
BFD_SW1_STUFE3 Brake force display stage 3 activated by deceleration sensor 1
BFD_SW2_STUFE2 Brake force display stage 2 activated by deceleration sensor 2
BFD_SW2_STUFE3 Brake force display stage 3 activated by deceleration sensor 2
BFD_THERM_TIMEOUT Brake force display thermal timeout
BFD_US_CC_MELD Check control notification for rear fog lights displayed as brake force display fault


And then there's these, as OB has pointed out..

LED_RUECKLICHT_OPTION LED tail light option
led_us LED (USA)
led_us_k4x
LED_V_MAX_DELTA
LED_V_MIN
LED_VERDECK_OFFEN LED convertible top open


These are found in the translation.csv file in NCSDummy - and as such I'm NOT inferring that they apply to or work on any E53 - just that they may exist as options in some cases.

And this is why I've never found them before - I have always been restricting my research to the E53 chassis - when you look at all chassis type more options appear.
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  #46  
Old 12-05-2018, 04:35 PM
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Which LCM do you have? Mine is a LCM C22 I don't have the blinking option like my E46. I love that option and I coded my E46 3rd brake light to flash.

https://youtu.be/ce90_-CSyPU
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  #47  
Old 12-05-2018, 04:49 PM
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Quote:
Originally Posted by Overboost View Post
Which LCM do you have? Mine is a LCM C22 I don't have the blinking option like my E46. I love that option and I coded my E46 3rd brake light to flash.

https://youtu.be/ce90_-CSyPU
Not sure which exact LCM I have... will check next time I have the laptop hooked up.

If I can get some time to look at this, I'll try hooking up an oscilloscope to the tail light circuits and play with this LED option. I would expect to see the tail and brake circuit PWM change to be a standard DC voltage level.

But I can't see it doing much beyond this as a coding change is not enough to change the tails to LED operation - there would also need to be wiring changes.

Of course, wiring changes are exactly what happens when folk install pre-LCI LED tails in LCI cars, so in this case, maybe the coding IS enough. Can't be sure though, as we don't really know BMW's intent for this coding option.

Stuff to investigate!
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  #48  
Old 12-05-2018, 04:51 PM
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I just browsed through all the E53 LCM versions and unfortunately we are fairly limited on our BFD adjustability. Much like our front standing lights (halos). Scheisse...
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  #49  
Old 12-05-2018, 04:57 PM
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Quote:
Originally Posted by wpoll View Post
Not sure which exact LCM I have... will check next time I have the laptop hooked up.
I always save my original PSW_FSW trace files in a original trace files folder in case I ever screw up.

And all my modified trace files are saved into a current (modified) PSW_FSW trace files folder in case I ever want to see what the hell I have changed over the years...

Also makes it easy to look and see what firmware my modules are...
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