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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > BMW Coding > What code needs to be removed for HID Reverse?



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      11-22-2011, 11:19 AM   #1
Josh1a1h
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What code needs to be removed for HID Reverse?

Hi Guys,

I am wanting to install some HID Reverse lights.

There are kits that can be installed that prevent warning messages which are $200 (a little much just for a reverse light)... But this is the kit i am going to purchase... Cheap, Yes... but if coding can iron out the errors, then why spend more?

http://www.ebay.co.uk/itm/35W-12V-H3...ht_4586wt_1265

H3 bulbs are supposedly whats needed to fit inside the reverse housing...

Anyway... obviously these are going to throw codes... So would removing the Reverse light start up and anything else required allow these to work without any problems?

I am completely new to coding, and i would be getting my garage to do it, so all detailed help is needed and very much appreciated!)

I am guessing this would be a similar process if you wanted to run an HID Fog light kit?


Many Thanks

Josh

Last edited by Josh1a1h; 11-22-2011 at 11:27 AM.
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      11-22-2011, 12:21 PM   #2
luster
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Coding wont help, as there are no chassis' with HID reverse lights.

The resistor trick will do the job to trick the car into thinking there is a filament globe on the rail. I believe a 100ohm, 10/w resistor will do the trick (double check the wattage of ur stock bulb for correct value).

On another note, these kits have been known to throw codes due to grounding problems, so please ground out the ballast to prevent additional error codes.

Best of luck!
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      11-22-2011, 12:33 PM   #3
Elliott@DetailAddict
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Quote:
Originally Posted by luster View Post
Coding wont help, as there are no chassis' with HID reverse lights.

The resistor trick will do the job to trick the car into thinking there is a filament globe on the rail. I believe a 100ohm, 10/w resistor will do the trick (double check the wattage of ur stock bulb for correct value).

On another note, these kits have been known to throw codes due to grounding problems, so please ground out the ballast to prevent additional error codes.

Best of luck!
Actually you can turn off reverse bulb errors just like every other exterior bulb error.
You're referring to a factory revers xenon retrofit which doesn't exist, correct. But coding can help.

FEHLERMELDUNG_CC_RFS_L
nicht_aktiv
FEHLERMELDUNG_CC_RFS_R
nicht_aktiv
KALTUEBERWACHUNG_RFS_L
nicht_aktiv
KALTUEBERWACHUNG_RFS_R
nicht_aktiv
WARMUEBERWACHUNG_RFS_L
nicht_aktiv
WARMUEBERWACHUNG_RFS_R
nicht_aktiv

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      11-22-2011, 12:53 PM   #4
Josh1a1h
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Yes, i am wanting to retrofit an HID H3 bulb into the reverse housing.

Coding should help, as the stock reverse bulbs receive the usual bulb test as well as all the other lights...

GRANT - Regarding the code you have posted.

Is that the code that instructs the reverse lights currently?

Is that the bit of code that should just be deleted?

How would i do it if i was coding?

Does this mean that a resister does not have to be installed because the code would be deleted?

All the best, and thanks both for chiming in.
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      11-22-2011, 01:07 PM   #5
luster
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Quote:
Originally Posted by Grant@DetailAddict View Post
Actually you can turn off reverse bulb errors just like every other exterior bulb error.
You're referring to a factory revers xenon retrofit which doesn't exist, correct. But coding can help.
Ahh, I do apologise. I was thinking more down the line of registering/adapting the retrofit (well, i guess it is more of an innovation than a retrofit since it doesn't exist!), rather than a much more simple 'ignore blown globes' coding.

Learning learning learning!
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      11-22-2011, 01:14 PM   #6
luster
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woah, there has been debates for years on the antonym for 'retrofit', i think 'innovate' will be it! yeah!

breaking ground here guys *laughs*
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      11-22-2011, 02:13 PM   #7
Josh1a1h
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Wouldnt it be as similar to adding fog lights or angel eyes?

All i am doing is splicing into the reverse light. Installing an HID Bulb and getting the power and ground from the battery.

What errors could i receive and it should be possible to code out? Correct?

Thanks
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      11-22-2011, 02:23 PM   #8
Elliott@DetailAddict
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As long as they are just bulb errors and not actual hardware issues with what you are doing (ballast issues etc) then you just MODIFY your code from aktiv to nicht_aktiv as I posted above to tell the car to ignore the bulb checking and error reporting for those specific bulbs (RFS L&R). Good luck!
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      11-22-2011, 07:01 PM   #9
Josh1a1h
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Well if everything is installed correctly, there shouldnt be any hardware issues... but hopefully only bulb errors...

So just to confirm and clarify....

The code should look like this
FEHLERMELDUNG_CC_RFS_L
aktiv
FEHLERMELDUNG_CC_RFS_R
aktiv
KALTUEBERWACHUNG_RFS_L
aktiv
KALTUEBERWACHUNG_RFS_R
aktiv
WARMUEBERWACHUNG_RFS_L
aktiv
WARMUEBERWACHUNG_RFS_R
aktiv

But should be changed to this

FEHLERMELDUNG_CC_RFS_L
nicht_aktiv
FEHLERMELDUNG_CC_RFS_R
nicht_aktiv
KALTUEBERWACHUNG_RFS_L
nicht_aktiv
KALTUEBERWACHUNG_RFS_R
nicht_aktiv
WARMUEBERWACHUNG_RFS_L
nicht_aktiv
WARMUEBERWACHUNG_RFS_R
nicht_aktiv

Is this bit of code only for controlling the Rear Reverse lights?

If i wanted to turn off bulb checks for the Angel eyes and Fog lights while i am doing this coding. Would this fix that too? Or would other code need to be amended specific for those bulbs?

Do you know which code this is?


Sorry about the questions, but thank you so far!!!

Best,
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      11-22-2011, 07:59 PM   #10
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Yes it is specific to Reverse. Fogs and NSW and Angel eyes differ depending on year and builds.
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      11-22-2011, 08:01 PM   #11
Josh1a1h
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THank you.
I think i found the fog light code on another thread.

Amending this code to prevent a bulb check is one thing. But as others have experienced with a system that isn't CANBUS or have built in resistors, they still experience Warning messages? I thought amending the code would prevent any need for resistors?

Could someone explain in a little detail?

Thanks
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      11-22-2011, 08:07 PM   #12
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Honestly without seeing their exact files and making the changes myself and having the car infront of me I cannot be sure of what they may or may not have done.

I would say make sure the kit is a reputable brand, if they error, I have fixed this personally for multiple cars using the method I outlined without fail.
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      11-22-2011, 08:20 PM   #13
Josh1a1h
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Ok... i will spend a little more money and go for a more reputable brand to reduce the variables...

So no resistors or relays should be required... Similar to that Ghetto Fog light set up people were using for avoiding coding..?
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