When i insert the key and turn it to on position --- if a wait a moment---there is a electronic buzz that seems to come from the front left of the car.
I told the service advisor about it when i recently had my car in, and his initial assessment was a relay---
When i picked up the car --- he said that it was a normal sound and the mechanic had deterrmined it was due to the motors that auto level the lights ---
Listen guys, as you already know--- I'm dumb as wood-- so of course i went along with it.... but thinking about it some more--- it happens all the time-- not just when the lights are on!!!!----
I'm no expert (though I play one at my day job), but my guess is the fuel pump. I hear somthing like what you describe, and I do not have motorized headlights (Litronics).
I have a 2001S and i hear the same bzzz with an electronic ticking at the end which comes from the left of the car. I pulled out the carpet cover and i have noticed that it comes from a black switch maker Bosch ( or relay, i dont know exactly what it is but according to the book i've seen that subject is attached to the hydraulic unit anti lock brake system control ). Perhaps an expert from this forum can help us and clear out this question.
electronic buzz when turn key on
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