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Author Topic: Xenon levelling system  (Read 337 times)

Offline benkay

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    • UK
Xenon levelling system
« on: May 14, 2020, 11:54:10 am »

We have a 2012 Abarth 500C (RHD, UK).

I recently replaced the suspension with a Bilstein coil-over setup, which has dropped the car around 25mm.

During the process, I somehow damaged the Xenon levelling mechanism. Once I got it on a ramp, I realised there was a sensor attached to the rear beam...I had allowed the beam to drop right down, so probably damaged this sensor, which was since replaced.

However, during a recent service, the garage have told us that the xenon's are still not auto-levelling as they should, and that there is a further sensor on the front suspension which is being broken due to the lowered suspension.

Is this correct? Could anybody point me to a diagram showing this, or some advice not he part I need to replace it?

Thanks, Ben


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    Offline BiAS

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      • Devon
    Re: Xenon levelling system
    « Reply #1 on: May 23, 2020, 11:25:29 pm »
    It's mounted on the nsf inner wing with a short link rod going down to the lower arm. The wife's had non xenon arms fitted just before we bought it so the front sensor wasn't attached to anything and the headlights were randomly up or down. I bought a kit off ebay, search: FIAT 500 GIULIETTA YPSILON HEADLIGHT ADJUSTER MOTOR HEIGHT RANGE ACTUATOR
    After I'd fitted it the lights were still high and I read a thread on here somewhere that mentioned speed bumps fully loaded bending the bracket that the rear sensor attaches to upwards so the system assumes that the rear is higher than it actually is and points the headlights up. I 'calibrated' the self level by parking on flat ground with the lights on a flat wall, laid on the floor at the rear of the car and reached under to the sensor and bent it back downwards until the lights were at the right level. The system only compares the values between the front and rear sensors and adjusts the headlights to suit so lowering shouldn't effect it unless the arms on the sensors are physically running out of travel. If they are the rear would probably be sorted by bending the bracket up and the front by either shortening the link or remounting the sensor slightly higher.
    Hth  :thumb:

    Offline tubage

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    Re: Xenon levelling system
    « Reply #2 on: June 08, 2020, 02:56:52 pm »
    I had the same problem after collecting my 2010 Abarth.  The lights were so low the first time I drove at night that I knew something wasn't right.  I found out on here that there is a sensor that connects to the NSF lower suspension arm that controls the height.  On investigation, it seems my lower arm has been replaced with the wrong type without the threaded bits for the sensor arm and it wasn't attached.  I took my best stab at the location and attached with some heavy duty wire so it's now connected again and the lights are level again. AND I can see further than 20 feet at night.  At some point I will replace the arms but for now it's OK.  I check it regularly to make sure it's stable and in the same location.