RLS Rain Sensor Retrofit - SZL LED Indicator not working

kolopn · 10-13-2023, 05:29 PM

Hello,

Recently I have retrofitted rain and light sensor into my E92. I have fitted sensor, headlight switch with auto lights, and I have replaced my right wiper handle for auto one with green LED indicator (I did not replaced whole SZL unit, but only swapped one handle). I have coded everything, and everything is working fine (also new wiper handle), but the LED indicator on this handle does not light up, when I switch wpiers to auto mode. Is there some hidden coding which I am not aware of, or it's not allowed to switch only handle on SZL switch (and have to do full SZL swap)?

Thanks for every reply!

ptpending · 10-14-2023, 04:53 AM

you have to do whole szl swap or you have to add additional functionality to the szl board by yourself -

bamaboy_ · 10-25-2024, 02:13 AM

did you make it work

kolopn · 10-25-2024, 05:10 AM

Yes, You need correct SZL with rain sensor function to make that work.

10-13-2023, 05:29 PM	#1
kolopn Private 34 Rep 79 Posts Drives: E92 325i N52B25 Join Date: May 2023 Location: Poland iTrader: (0)	RLS Rain Sensor Retrofit - SZL LED Indicator not working - coding? Hello, Recently I have retrofitted rain and light sensor into my E92. I have fitted sensor, headlight switch with auto lights, and I have replaced my right wiper handle for auto one with green LED indicator (I did not replaced whole SZL unit, but only swapped one handle). I have coded everything, and everything is working fine (also new wiper handle), but the LED indicator on this handle does not light up, when I switch wpiers to auto mode. Is there some hidden coding which I am not aware of, or it's not allowed to switch only handle on SZL switch (and have to do full SZL swap)? Thanks for every reply!
	Appreciate 0 Tweet Quote

10-14-2023, 04:53 AM	#2
ptpending Colonel 527 Rep 2,916 Posts Drives: e81 Join Date: Dec 2013 Location: Poland iTrader: (1)	you have to do whole szl swap or you have to add additional functionality to the szl board by yourself - __________________ E81 2007 130i 6cylinder Montego blue Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
	Appreciate 1 kolopn34.00 Quote

10-25-2024, 02:13 AM	#3
bamaboy_ New Member 2 Rep 7 Posts Drives: bmw e91 320d++ Join Date: Sep 2019 Location: bulgaria iTrader: (0)	did you make it work
	Appreciate 0 Quote

10-25-2024, 05:10 AM	#4
kolopn Private 34 Rep 79 Posts Drives: E92 325i N52B25 Join Date: May 2023 Location: Poland iTrader: (0)	Yes, You need correct SZL with rain sensor function to make that work.
	Appreciate 0 Quote