Rain and light sensor retrofit question

[Clavurion]

You add this value on the 12th bit on SA string of ZCS. After you have changed the ZCS code all modules "Code car" or individually base code (SG_CODIEREN) instrument clustrer, LCM and GM.

521 (SA) 0000000000010000 REGENSENSOR

Changing ZCS

-Always at first read vehicle ZCS.
- After reading ZCS press F1 (Enter ZCS)
- Make changes to ZCS, remove last check digits and check “Calculate check sum”
- F6 (Back)
- F4 (Process ECU)
- Choose propriate control unit (EWS and IKE/KMB hold ZCS), then OK
- F2 job -> ZCS_SCREIBEN
- F3 (execute job)

Do the same to both modules that hold ZCS (EWS and IKE/KMB)

[Bmwe5320023.0]

Probably noob questions...
What value to I add to 12th bit on SA string?
What is SA string anyway?
Is it this one?

12th digit is "5". Do I change it to something?

Do I have to delete "V" from GM line and "A" from VN line?

Where am I supposed to add this string?
521 (SA) 0000000000010000 REGENSENSOR

I've tried looking for ncs coding guides but looks like everyone does it slightly differently...

[Clavurion]

Originally Posted by Bmwe5320023.0

Probably noob questions...
What value to I add to 12th bit on SA string?
What is SA string anyway?
Is it this one?

12th digit is "5". Do I change it to something?

Do I have to delete "V" from GM line and "A" from VN line?

Where am I supposed to add this string?
521 (SA) 0000000000010000 REGENSENSOR

I've tried looking for ncs coding guides but looks like everyone does it slightly differently...

12th bit is 5 so it already consist that bit needed for rain sensor (1+4 =5). (Every bit can consist 1, 2, 4, 8 or any combination sum of these. 10=A, 11=B...) So no need to change ZCS. Just in case did you check that ZCS on both EWS and instrument cluster (KMB or IKE) matches? Now if you want to make sure the actual coding on modules is correct regarding rain sensor do the base coding for all modules with "Code car" or code "SG_CODIEREN" instrument cluster, LCM, GM and RLS.

[Bmwe5320023.0]

The FG number looks different when I read from EWS and KMB

Should I click F1 (enter ZSC) after reading from KMB and input the the FG string from EWS?

[Bmwe5320023.0]

Originally Posted by Clavurion

Now if you want to make sure the actual coding on modules is correct regarding rain sensor do the base coding for all modules with "Code car" or code "SG_CODIEREN" instrument cluster, LCM, GM and RLS.

Could you elaborate on these steps?
I understand I first need to read a module to have info in FSW_PSW file. Then I should write it to LCM, GM and RLS?

I think I coded LCM, GM and RLS modules.
Where should I look for this regesensor parameter to change it? Will it be in FSW_PSW file when I read LCM or GM modules?
Can't seem to find it

[Clavurion]

Originally Posted by Bmwe5320023.0

The FG number looks different when I read from EWS and KMB

Should I click F1 (enter ZSC) after reading from KMB and input the the FG string from EWS?

On instrument cluster the VIN is short with only the last 7 digits matching. EWS has full correct VIN.

[Clavurion]

Originally Posted by Bmwe5320023.0

Could you elaborate on these steps?
I understand I first need to read a module to have info in FSW_PSW file. Then I should write it to LCM, GM and RLS?

I think I coded LCM, GM and RLS modules.
Where should I look for this regesensor parameter to change it? Will it be in FSW_PSW file when I read LCM or GM modules?
Can't seem to find it

No need to read and change anything. Just read ZCS from either module holding it. Then do the actual coding which is done by NCS according to ZCS info. SG_CODIEREN should be the default task. Then just choose module and "Execute" will do the job.

If you want to read FSW_PSW values these parameters should be as stated "aktiv" or "nicht aktiv" with rain sensor option.

LCM:
AUTOM_FAHRL_STEUERG
aktiv

GM:
WISCHERPOTI
nicht_aktiv

[Bmwe5320023.0]

Ok so I load revtor's profile, F1 --> F3 --> E53 --> EWS --> OK --> Back --> Process ECU --> LCM --> OK --> change jobs --> SG_CODIEREN --> Execute jobs (lights flash, says coding ended).
Do the same thing for GM3 module and RLS modules.

Then I do it one more time, choose LCM, change job to CODIERDATEN_LESSEN, open the FSW_PSW and it does say
LCM:
AUTOM_FAHRL_STEUERG
aktiv

I repeat this sequence for GM3 and open the file and see
WISCHERPOTI
nicht_aktiv

Did I miss something to make the wipers work when I spray water?

[Clavurion]

Coding should be OK so rain sensor should work if the sensor itself is working correctly. Check with diagnostics if there are any codes regarding rain sensor and initialize the sensor to windscreen with diagnostics.

[Bmwe5320023.0]

I'm thinking I might've gotten it to work.
Do you have to push the wiper control arm up once?

It does a single swipe, then if I spray water on the windshield, it swipes again right away.

Buy if I don't spray, the wipers still swipe after a period of time.
Is this how it's supposed to work?