Quote:
Originally Posted by nakata
Actually weak point is external ESP pump for ABS 5.3 unit. Which make some internal bleed and lowering pressure to brake caliper. Which can be feel as sponge brake pedal. Now have ABS 5.7 from C5 latest year(2002-2005) have internal control for ESP and havent this kind of problems. Pedal is firm and sensitive. Hope to understand my poor english.
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That is interesting thank you
My 03 Allroad has 5.3 with the external pump and has awful brakes compared to my 03 A6 which has 5.something without the pump and has excellent brakes. It never occurred to me that the external pump could cause that. Tbh I suspected the single vs dual servo.
So, next question: what interaction does the cluster have with the ABS that requires changing to the C5 one? I thought it only talked to the ECU/TCU, other than warning lights?
Your English is fine, no worries
I appreciate you indulging my curiosity.