Have been experiencing loud alarm buzzer behind center of dashboard when accelerating my 2000 VW Beetle w/1.8T and 5-sp to freeway speed. Car has careful 83K by one-owner. Alarm is loud and occurs in upper gears with no other symptoms of power loss. Indeed, when letting off the gas a bit, alarm ceases. When reaccelerating, alarm sounds again and continues until easing off on gas. VW dealer unable to help, along with other local European vehicles mechanic.
Would greatly appreciate insight or advice from others experiencing this scenario.