Sonata 2000 - Small pulsing device (pump?) behind NS headlight - What is it?

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T

Tom

Turning the ignition key on a 2000 Sonata yesterday, without
starting the engine, I heard a clicking sound from the engine
compartment. Lifted the bonnet and found a small pump-like device
behind the headlight. I disconnected it and the clicking stopped.

Please, anyone. What is this device? A diaphragm pump, for what?
 
Turning the ignition key on a 2000 Sonata yesterday, without
starting the engine, I heard a clicking sound from the engine
compartment. Lifted the bonnet and found a small pump-like device
behind the headlight. I disconnected it and the clicking stopped.

Please, anyone. What is this device? A diaphragm pump, for what?
Click to expand...

If this is on the right side of the vehicle, it's possible it's the
alarm siren.
 
If this is on the right side of the vehicle, it's possible it's the
alarm siren.
Click to expand...

No. it's in the left (NS/UK). Sorry my info is so sparse and lazy,
I'll get a better look at it soon. My first thought was that it was
the central locking pneumatic pump which could easily be a diaphragm
type and therefore make a pulsing sound - but the central door locking
still works afer my dsconnection Being close to the headlight I wonder
if it something to do with the steerable (fog?) light.
 
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