500X Xenon lights enable

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wildiesel
Posts: 3
Joined: 10 Jul 2017, 06:48

500X Xenon lights enable

Post by wildiesel » 10 Jul 2017, 07:06

Hi all.

I am new to the forum and recently bought myself a 500X.

It's a secondhand 500X cross 1.4T Multiair which has the halogen lights but I asked them to retrofit the xenon lights as an optional extra. The workshop said it's fine and it will work because the mounts are the same and the xenons have the same connector.

I do have 2 problems though. The lights are working fine but as soon as the alternator starts to charge after starting the engine, both lights start to flicker. Voltage at the lights measured 13.4-13.8 when the alternator kicks in which is normal. However, these D5S bulbs are sensitive to overvoltage and has a maximum voltage rating of 13.2V; which is why they flicker.

The second problem is that the high beam doesn't work because it used to have halogen lights. Halogen bulbs have 2 filaments; one for low beam and 1 for high beam. The low beam is kept on when you flash but is turned off when you switch to high beam. The xenons have a flap which moves in front of the bulb to cut off the light for low beam. The high beam works if I flash but as soon as I switch to high beam the lights turn off but I can hear the flap move.

My question is if it might be possible that these can be fixed/changed in the body computer. The connectors are the same and the looms are the same so surely it's just a configuration that prevents the ECU from removing power from the low beam?

Can someone please investigate if there is an option to "enable" xenon lights in the body computer? Maybe it can also make the computer regulate the voltage going to the lights as they work normally (obviously) when xenons are standard?

I look forward to everyone's responses.

Thanks! :D

2015 Fiat 500X cross 1.4T DDCT 4x2 (South African spec). Let me know if anyone needs more info about the car.

marqo
Posts: 44
Joined: 24 Aug 2010, 19:06
Location: Poland

Re: 500X Xenon lights enable

Post by marqo » 16 Jul 2017, 23:11

There is any modification to BC. Orginal Xenon lamps are plug&play to a car body and connector is the same. Only there is necessary to put diode STTH3002 between pin 5 and 7 according to following diagram
500x_Modifica_Xenon.jpg
500x_Modifica_Xenon
500x_Modifica_Xenon.jpg (15.09 KiB) Viewed 2880 times
and put mass to pin 8 according to attached picture
IMG_20160514_193011.jpg
picture
IMG_20160514_193011.jpg (81.86 KiB) Viewed 2880 times
Alfa 159 1.9 JTDm 16V 180CV noDPF
Fiat 500X CityLook 1.6 e-torque 110CV

wildiesel
Posts: 3
Joined: 10 Jul 2017, 06:48

Re: 500X Xenon lights enable

Post by wildiesel » 17 Jul 2017, 06:39

Thanks for the help!

What could be the cause for the lights to flicker when the engine is running?

wildiesel
Posts: 3
Joined: 10 Jul 2017, 06:48

Re: 500X Xenon lights enable

Post by wildiesel » 07 Aug 2017, 07:10

To update: I think the alternator has a dead diode because I'm getting almost 3V AC at the battery, which would explain the lights flickering and the enormous amounts of electrical issues I had since I got the car.

Just one question. What is the purpose of making the ground pin8 thicker?

marqo
Posts: 44
Joined: 24 Aug 2010, 19:06
Location: Poland

Re: 500X Xenon lights enable

Post by marqo » 06 Dec 2017, 00:38

Have you solved issue with flickering lights?
I don't understand your question about thicker mass.
Alfa 159 1.9 JTDm 16V 180CV noDPF
Fiat 500X CityLook 1.6 e-torque 110CV

MaciekZ
Posts: 1
Joined: 10 Dec 2017, 21:53

Re: 500X Xenon lights enable

Post by MaciekZ » 10 Dec 2017, 22:01

Hi,

Any solutions for flickering lights?

marqo
Posts: 44
Joined: 24 Aug 2010, 19:06
Location: Poland

Re: 500X Xenon lights enable

Post by marqo » 12 Dec 2017, 06:31

Wiring for xenon lamp below.
Attachments
xenon.jpg
Xenon lamp wiring
xenon.jpg (80.45 KiB) Viewed 2498 times
Alfa 159 1.9 JTDm 16V 180CV noDPF
Fiat 500X CityLook 1.6 e-torque 110CV

davidino66
Posts: 13
Joined: 28 Jun 2017, 19:17
Location: Italy

Re: 500X Xenon lights enable

Post by davidino66 » 20 Dec 2017, 09:29

flickering disapper after corret byte configuration on body computer and proxi alignement...
You do not need diode after that.

marqo
Posts: 44
Joined: 24 Aug 2010, 19:06
Location: Poland

Re: 500X Xenon lights enable

Post by marqo » 22 Dec 2017, 22:08

With great Yani's help I've activated it in PROXI and no more flickering :D
Alfa 159 1.9 JTDm 16V 180CV noDPF
Fiat 500X CityLook 1.6 e-torque 110CV

alex-et3
Posts: 127
Joined: 19 Apr 2017, 22:42
Location: ROVIGO - Italy

Re: 500X Xenon lights enable

Post by alex-et3 » 02 Jan 2018, 22:48

marqo wrote:With great Yani's help I've activated it in PROXI and no more flickering :D
Which byte did you change?

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