What do these stand for?

ASR: Active Stability Regulator

For today’s typical high-torque engines, a form of wheelslip regulation or traction control (ASR) can increase both comfort and safety, particularly on surfaces with differing coefficients of friction or on slippery roads. It makes smooth starts and acceleration possible through all speed ranges without wheel-spin or fishtailing.

ASR only operates in conjunction with the electronic accelerator (E gas) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.

ASR improves traction and can help the driver maintain control even if the limit of adhesion is inadvertently reached while cornering. In addition, it reduces tire wear. ASR activation, is indicated by a flashing light in the instrument cluster; it works with the electronic differential lock (EDL) and it is also part of the electronic stabilization program (ESP). ASR can be
deactivated with the ESP switch

Clip from the Audi website. MSR is the same I think? :chin:

ASR - Anti Slip Regulator - Traction control or its proper German name Anti-Schlupf Regelung.

MSR - Motor Schleppmoment Regelung - Engine Braking Regulation, to stop locking up when down shiftin.

VindiVee8 said:

MSR - Motor Schleppmoment Regelung - Engine Braking Regulation, to stop locking up when down shiftin.

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Good to know

Brill, thanks for the replies.

There is no ESP button the GP's.

ESP is always on if you have ASR. you can turn off the ASR but not ESP

fiatdownunder said:

ESP is always on if you have ASR. you can turn off the ASR but not ESP

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Yes thats right, some cars have a ESP button and they think by turning this off deactivates ESP which is doesn't. Just turns off TC.