BMW 3-Series (E90 E92) Forum - View Single Post

MACKENZIE2576 · 09-30-2020, 06:37 AM

Hi All,

I know there's been some discussion but there hasn't been an answer given to this. Whenever someone raises a RLS retrofit, it is quickly dismissed. I have been asking the same question for a while now and I only recently found the answer after looking for ages.

So I thought Why not give back to the rest of the community and share the knowledge?

For all those interested, my BMW e90 was without a RLS and I prefer the lights to come on without having to do anything similar with the rain sensor. - So here is the guide of what you need to do.

You will need a RLS switch, RLS stalk, RLS prism, an extended mirror cap ( I will attach an image and links of everything) I am from the UK so the links would probably be UK seller's.

The schematics of the RLS wiring is -

https://www.newtis.info/tisv2/a/en/e...inputs/upOxh9C

Installation location - https://www.newtis.info/tisv2/a/en/e90-328i-lim/RS71SKM

When you take the plug out of the FZD (roof module) it is labelled on the back of it what number the pins are. From some wiring schematics, I found out to Install pin 8 as the power +, pin 7 as the power - and 6 as the bus wire K-CAN. There are 4 cables connected to the RLS but only 3 need to be connected

I bought this cable from eBay and fits like a glove this connects to the RLS :- https://www.ebay.co.uk/itm/5-St%C3%B...72.m2749.l2649

The wiring will need to be cut at the end and attached with a pin to go into FZD link for this is -

https://uk.rs-online.com/web/p/autom...30393738303826

For the RLS to be stuck on the windscreen you will need a prisms, please ensure it is lined up properly before it is stuck on as this will be difficult to take off - https://www.ebay.co.uk/itm/BMW-3-SER...oAAOSwXPNaGCqm

Once everything is coded you will need coding NCS Expert will need to be used and if you aren't sure what to do please take it to someone who knows what they are doing as you don't want to brick a module -

Code $521 to the. Vo, modify the fzd, nfrm and RLS with the required settings and that's it! You now have auto lights and auto wipers!

In the case your auto lights work and you rain sensor doesn't use INPA to calibrate the sensor, follow this guide -

I hope this helps! Also, I did not change the windscreen or anything like that this is a standard windscreen some people say you need a special windscreen this is not the case I can assure as it works on mine.

Feel free to ask any questions, I will attach images to help.

Credit to Hallamnet and his advise on this retrofit

09-30-2020, 06:37 AM	#1
MACKENZIE2576 Enlisted Member 6 Rep 43 Posts Drives: Bmw e90 LCI Join Date: Jul 2020 Location: Leicester iTrader: (0)	BMW E90 RLS Retrofit DIY Hi All, I know there's been some discussion but there hasn't been an answer given to this. Whenever someone raises a RLS retrofit, it is quickly dismissed. I have been asking the same question for a while now and I only recently found the answer after looking for ages. So I thought Why not give back to the rest of the community and share the knowledge? For all those interested, my BMW e90 was without a RLS and I prefer the lights to come on without having to do anything similar with the rain sensor. - So here is the guide of what you need to do. You will need a RLS switch, RLS stalk, RLS prism, an extended mirror cap ( I will attach an image and links of everything) I am from the UK so the links would probably be UK seller's. The schematics of the RLS wiring is - https://www.newtis.info/tisv2/a/en/e...inputs/upOxh9C Installation location - https://www.newtis.info/tisv2/a/en/e90-328i-lim/RS71SKM When you take the plug out of the FZD (roof module) it is labelled on the back of it what number the pins are. From some wiring schematics, I found out to Install pin 8 as the power +, pin 7 as the power - and 6 as the bus wire K-CAN. There are 4 cables connected to the RLS but only 3 need to be connected I bought this cable from eBay and fits like a glove this connects to the RLS :- https://www.ebay.co.uk/itm/5-St%C3%B...72.m2749.l2649 The wiring will need to be cut at the end and attached with a pin to go into FZD link for this is - https://uk.rs-online.com/web/p/autom...30393738303826 For the RLS to be stuck on the windscreen you will need a prisms, please ensure it is lined up properly before it is stuck on as this will be difficult to take off - https://www.ebay.co.uk/itm/BMW-3-SER...oAAOSwXPNaGCqm Once everything is coded you will need coding NCS Expert will need to be used and if you aren't sure what to do please take it to someone who knows what they are doing as you don't want to brick a module - Code $521 to the. Vo, modify the fzd, nfrm and RLS with the required settings and that's it! You now have auto lights and auto wipers! In the case your auto lights work and you rain sensor doesn't use INPA to calibrate the sensor, follow this guide - I hope this helps! Also, I did not change the windscreen or anything like that this is a standard windscreen some people say you need a special windscreen this is not the case I can assure as it works on mine. Feel free to ask any questions, I will attach images to help. Credit to Hallamnet and his advise on this retrofit Attached Images
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