VEHICLE: 2015 Audi A3 2,0 Diesel
ISSUE: A customer of ours has a 2015 Audi A3 2,0 Diesel and they are complaining of a squeaking noise from the engine bay when the engine is idling. We have heard the squeaking noise when starting the engine from cold but are having difficulty finding the source of the noise in the workshop. Do you have any ideas what could be causing this noise?
DIAGNOSIS & SOLUTION: Yes, we are aware of this fault affecting A3 models 2013-18 with CRLB/CRLC engine codes. The cause is due to an unsatisfactory design of the timing belt tensioner pulley which adversely affects the wear of the timing belt creating the squeaking noise. Inspect the timing belt tensioner (fig 1.1.). If the timing belt tensioner is NOT made by Litens, fit a new timing belt tensioner. It is strongly recommended that if a new timing belt tensioner is fitted, a new timing belt is also fitted. Carry out road test to ensure noise has been eliminated.