Sport Suspension Missle Switch Illumination.. ?! | FerrariChat

Sport Suspension Missle Switch Illumination.. ?!

Discussion in '348/355' started by lemon355, Jun 9, 2024.

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  1. lemon355

    lemon355 Karting

    Aug 8, 2009
    218
    Melbourne Australia
    Full Name:
    Peter Kay
    As part of my LED upgrade I turned my attention to the Sport suspension switch in the vehicle today.

    My dash is out as my dimmer switch is blown so its a bit hard to tell what the correct illumination of this switch should be..:(

    From memory in the default rest position (switch lever away from the icon) ie SPORT MODE , I recall it lit up GREEN with the parkers on.. and then illuminated RED when the switch was activated , ie placed in COMFORT mode. ( lever position closest to Icon)

    So I decided to take the switch apart and see for myself.. but to my surprise I only found a single red SMD LED..that turns on/off with the switch depressed. (little black clicker next to the SMD)

    Thats all..?!?! I cant find any green LED to swap out:oops:??!

    Is it possible they had bi- color LED's that illuminated both red and green back in the 90's?? or is my memory of it being green in the default SPORT MODE incorrect..??

    Can anyone please shed some light on this?

    PS: taking the switch apart is VERY EASY.. Just use toothpicks as per photo.. Takes about 2min Tops..
    No need to take apart the Top Lever /Rocker mechanism
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  2. Qavion

    Qavion F1 World Champ
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    A red led is all I have on my Sport "coil+S" switch (with sidelights on). The dash warns you that you're in comfort mode.
     
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  3. lemon355

    lemon355 Karting

    Aug 8, 2009
    218
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    Peter Kay
    Ok thanks for confirming Ian..

    One less LED to change color it seems..

    I'm amazed how easy it is to take apart the missile switches ...
    I had one one clown quote me $120 per switch to change the LED.. :eek:

    That pissed me off so much I took it apart myself.. Now cost is just $10 per switch to resolder in a new SMD.

    BTW anyone know of a mob that can pull apart and repair the Dimmer switch..?!

    There is one guy near you Ian that ''claims'' he will have a 'go' and offers a no-fix no pay guarantee..


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  4. lemon355

    lemon355 Karting

    Aug 8, 2009
    218
    Melbourne Australia
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    Peter Kay
    "A red led is all I have on my Sport "coil+S" switch (with sidelights on). The dash warns you that you're in comfort mode."

    Im just going to revisit your previous statement for a moment Ian. ( 2 questions)

    With sidelights OFF: Does the switch itself alternate between No illumination (Sport Mode) and Red Illumination (Comfort Mode)?

    With sidelights ON: Does the switch itself alternate between No illumination (Sport Mode) and Red (Comfort Mode)?

    Im just finding it a bit funny that with the sidemarkers ON that all the other missile switches in that row. ie ( Rear Fog, mirror defrost, door Lock, door unlock) all
    light up green.. but the sport suspension switch has NO Illumination in the default rest position ( sport Mode..!!?!?)

    Are you able to please confirm..?
     
  5. Qavion

    Qavion F1 World Champ
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    No change. OFF/OFF

    No change. Red/Red.

    Is yours acting as you described?
     
  6. lemon355

    lemon355 Karting

    Aug 8, 2009
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    Peter Kay
    Now its going to get tricky..

    In the vehicle YES it is as you describe..

    Parkers OFF: No change. OFF/OFF
    Parkers ON: No change. Red/Red. And the dash warns you that you're in comfort mode.

    However when bench testing the switch itself with a 9V Battery the LED lights up, but when you press the black clicker next to the LED it goes OFF?!!

    Go figure..?!!?



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  7. Qavion

    Qavion F1 World Champ
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    How have you got it wired up in your test rig?

    The wiring diagrams for the older switch (no S) show this.

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    (I may have added a generic resistance value)


    There may not be any differences between the older switch and the S switch. I don't have a diagram for the F1 SPORT switch, either.
     
  8. lemon355

    lemon355 Karting

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  9. Qavion

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    Apart from the GR (yellow/red) wire, all the wires go to the suspension ECU, so it's difficult to know what is going on. Can you confirm that the black/purple wire on the switch connector is a permanent earth at all times? Black suggests some kind of earth. If it is, the light will always illuminate (if the internal diagram is correct). Note: I'm not sure if it's safe to put an ohmmeter or 9 volts on the black/purple wire as the car's 12 volts normally goes through the diode and resistor.

    Here is the original diagram for the earlier "non-S" switches.

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    The diagram doesn't show Sport or Comfort, but I thought I had checked my switch and confirmed Sport was on the white/red (BR) wire. Do you get continuity between pins 5 & 2 in the Sport position?

    I suppose we should ask the question "Is the microswitch pushed in the Comfort position?".
     
  10. lemon355

    lemon355 Karting

    Aug 8, 2009
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    This is what I have on my suspension switch..

    Pin2: Black/ Purple stripe: constant ground.
    Pin5: White/Red stripe:
    Pin4: Red/Green Stripe:
    Pin5: Yellow Red stripe

    As advised, I did not not put voltage or an ohmmeter through the black purple wire.. just did a continuity test..
     
  11. Qavion

    Qavion F1 World Champ
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    The black/purple wire goes to the Suspension ECU. I'm not sure how you did a continuity check to ground without going through the ECU.

    Anyway, on the car, if you have a permanent earth on the black/purple wire and the wiring diagram for the switch internals are correct (in the WSM), the light will always be lit when you have power on the Yellow/red wire. The yellow/red wire is instrument and switch lighting.

    Normally, Ferrari show their diagrams with the car in a default state (in this case, SPORT), which would put an earth on the white/red wire (pin 5) via the black/purple wire. I assumed pushing the clicker (microswitch) would be Comfort mode. This would put an earth on the red/green wire (pin 4) via the black/purple wire ... and the white/red wire (pin 5) would be open circuit, extinguishing the LED (because your test probes are on 3 & 5).

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  12. lemon355

    lemon355 Karting

    Aug 8, 2009
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    #12 lemon355, Dec 17, 2024
    Last edited: Dec 17, 2024
    Ok so Im revisiting this thread because I am needing to alter the reisistance to the LED for my Interior LED conversion.

    With the feed voltage to the plug of 13.4V..I measured the voltage at the Red LED with the illumination ON..

    It was 1.66V @ the LED and the resistance of the resistor was 2.68kOhm.

    I only need about 10-15% more brightness.. and it should be OK.

    As a test I attached (+ve to pin 3) and (-ve to pin 5) via an adjustable power source and I gently lifted the voltage to from 13.4V to 13.8V.and the LED remained lit and intact. (current limited to 20mA)
    But this is represents only a 5% increase in voltage.

    The real question now is how far I can push the voltage without knowing the specs for the OEM Ferrari Red LED..

    I fed 1.7v into another Red SMD I had here and it barely lit up compared to the Oem,, F355 one wgich is pretty bright at 1.69V ( oem)

    More concerning still is will this have an affect on the Sport Suspension ECU if i lower the reistance to the OEM LED ?

    I certainly don't want to blow that..!

    PS the Hazard switch and SS switch are both OEM brightness.. The hazard switch is th newer one ferrari makes that has no internal halogen lamp.. only two LED. Its much nicer than the old one.. and flashes much brighter when depressed













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