Thread: RPM fluctations
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Old 22nd December 2021, 12:21 AM
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mcs mcs is offline
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Join Date: Feb 2015
Posts: 174

As an update, I sent my car back to have the fluid rechecked and reset the adaptations.

There is no mechanical fault with the car to cause the misbehaviour of shifts. I did further research and decided to replace the brake switch.

This car is now 100%. The 'box can coast, it doesn't lock and unlock the TC clutch, it has power off the line again. Shifts are also more concise somehow.

I took apart the brake switch, it is a two position switch and it seems it is possible for it to misread occasionally or stick confusing the gearbox ecu.

Just some information shared.


04 A8 - 4.2 Sport

Indigo Leather Sports Seats - Sports wheel - Sports Air Suspension
Auto Boot - Double Glazing - AMI - Solar roof
TV - Bose - Voice Control - TPMS - AFS- TINT
Power Blind, Fingerprint - Light package (in and out)

OEM Auto headlights & rain sensing wipers
OEM Bluetooth phone
Bluetooth Audio Streaming
Reverse Camera
OEM Aluminium Package
Auto boot close using remote/door button
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