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XALLECS
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XALLECS's Most Thanked Post
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DIY Acc2 lens heating disabling coding off ( E60 E65 E90) 1
Thread Subject Forum Name
DIY Acc2 lens heating disabling coding off ( E60 E65 E90) BMW E Series Coding & Retrofits & Diagnostics
Post Message
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


Good Luck !

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