[XALLECS]

So you have an error code that says that the lens heating (lensheizung) on your ACC2 (adaptive cruise controll) radar sensor is broken. So now your cruise Control isn't working at all.


I'm going to tell you how you can turn off the lens heating function completely, if you can live with it not working in heavy snow and ice.
The lens heating is actually only turned on in temperatures between +5°C to -5°C.


Wanings: 
1. I am not responsible if you break anything in your car
2. This is only for people who know how to code usual stuff.

First of all you will need to have NCS expert and NCS dummy installed and working properly.



1. Backup the following files from daten/E65 daten/E60 daten/e89 folder:
it is the corespondent file for wich model you want to code the lens heating


!!!!!!! MADE A BACK UP OF !!!!!!!!!!!
E65CVT.000 (e65) - E60CVT.000 (e60) - E89CVT.000 (e89)
ACC2_E60.C28 (or whatever your ACC2 module is)
SWTFSW02.dat (e65) - SWTFSW05.dat (e60) - SWTFSW03.dat (e89)



Code:

Code:

E65CVT.000 (e65) - E60CVT.000 (e60) - E89CVT.000 (e89)

ACC2_E60.C28 (or whatever your ACC2 module is, it could be ACC2_E60.C23 , etc.)

SWTFSW02.dat (e65) - SWTFSW05.dat (e60) - SWTFSW03.dat (e89)

2. Disassemble SWTFSW02.dat (e65) - SWTFSW05.dat (e60) - SWTFSW03.dat (e89)using NCS Dummy.

Add the following and reassemble.*



Code:

Code:

SWT_EINTRAG : 1700 "LENSHEIZUNG"

3. Disassemble E65CVT.000 (e65) - E60CVT.000 (e60) - E89CVT.000 (e89)

under*GRUPPE : {"Codierung_ACC"}*add the following and reassemble.





Code:

Code:

FSW_PSW : 1700 0007 // LENSHEIZUNG aktiv

4. Disassemble ACC2_E60.C28 or whatever your ACC2 module is and edit the following coding line located below "DYNAMIK_FLAG_ACC2" and above "NAVI_KOPPLUNG" (in between them) from looking like this:





Code:

Code:

PARZUWEISUNG_FSW : {00003003} 0000000F 0001 100C {} (02) {h} {} // DYNAMIK_FLAG_ACC2
PARZUWEISUNG_PSW1 : 0007 (01) // aktiv
PARZUWEISUNG_PSW1 : 000B (00) // nicht_aktiv
UNBELEGT1 : {00003003} 0000000F 0001 {} (04)
UNBELEGT2 : (01)
UNBELEGT1 : {00003003} 0000000F 0001 {} (08)
UNBELEGT2 : (01)
PARZUWEISUNG_FSW : {00003003} 0000000F 0001 0ED3 {} (10) {h} {} // NAVI_KOPPLUNG
PARZUWEISUNG_PSW1 : 0008 (00) // wert_01
PARZUWEISUNG_PSW1 : 0026 (00) // wert_02
PARZUWEISUNG_PSW1 : 0027 (00) // wert_03
PARZUWEISUNG_PSW1 : 0021 (01) // wert_04
PARZUWEISUNG_PSW1 : 00B6 (00) // wert_05

It should be edited to look like this:





Code:

Code:

PARZUWEISUNG_FSW : {00003003} 0000000F 0001 100C {} (02) {h} {} // DYNAMIK_FLAG_ACC2
PARZUWEISUNG_PSW1 : 0007 (01) // aktiv
PARZUWEISUNG_PSW1 : 000B (00) // nicht_aktiv
UNBELEGT1 : {00003003} 0000000F 0001 {} (04)
UNBELEGT2 : (01)
PARZUWEISUNG_FSW : {00003003} 0000000F 0001 1700 {} (08) {h} {} // LENSHEIZUNG
PARZUWEISUNG_PSW1 : 0007 (01) // aktiv
PARZUWEISUNG_PSW1 : 000B (00) // nicht_aktiv
PARZUWEISUNG_FSW : {00003003} 0000000F 0001 0ED3 {} (10) {h} {} // NAVI_KOPPLUNG
PARZUWEISUNG_PSW1 : 0008 (00) // wert_01
PARZUWEISUNG_PSW1 : 0026 (00) // wert_02
PARZUWEISUNG_PSW1 : 0027 (00) // wert_03
PARZUWEISUNG_PSW1 : 0021 (01) // wert_04
PARZUWEISUNG_PSW1 : 00B6 (00) // wert_05

5. Reassemble the files with NCS dummy.



6. Replace your original files with the reassembled ones.



7. Using NCS Expert read your ACC2.



8. Find the function*LENSHEIZUNG *

it is set to aktive (value 01) by default. (Which means that lens heating is turned on)



9. Change it to nicht_aktiv  or automatic ( the value should be 00) and code.



10. Done


Hope this helps.

[Volum]

Looks like this method doesn't work with E60 LRR. Anyone has any suggestion to make, is there anything else needed to change when the car uses LRR?

[jaki]

And there is allways the hard method to use:
1. open the case (I REALLY hate this job)
2. insert two eg 6,8 ohm resistors in serie in to the metal pins for heating dome
3. glue the case and enjoy

Eventough the dome is without original heating these resistors are actually quite heavy and warm the dome at least a bit.

[vibbelito]

Weird. I could have sworn I wrote this guide a few years back.  Maybe it disappeared when the forum was hacked and it was reverted to an old backup.
I see you left out the part where I thanked all the people that helped make the guide possible.

Anyway. Glad to see that it's still relevant and helping people since I never got to try it out myself. 
I have since this custom coded the acc2 to be able to be set as low as 1km/h.