« Reply #5 on: 04 July 2022, 18:15 »
Technical product information : 2029747/4 2029747/4
Service info: running gear - rattling/jarring noises from front of vehicle when pulling away for first time after start
Release date: 16-Dec-2020
Customer statement:
• Briefly after pulling away for the first time after the engine start a rattling or jarring noise can be heard
from the front of the vehicle.
Workshop findings:
• The customer statement can be reproduced.
: Type of change:
2029747/4
Technical background
Shortly after pulling away for the first time after the engine start the anti-lock brake system (ABS)/electronic
stabilisation control (ESC) performs a short self-check in which all valves of the hydraulic unit are activated
and the return pump briefly starts up. This system-related behaviour is sometimes perceived as rattling or
jarring noise.
The self-check is necessary for a correct operation of the ABS/ESC system. The resulting The self-check is necessary for a correct operation of the ABS/ESC system. The resulting working noises are normal. The working noises are construction-related and normal. There is working noises are normal. There is no parts damage.
« Last Edit: 04 July 2022, 18:18 by fredgroves »
Logged
Current: Mk8 GTI DSG, Adelaides, DCC, HUD, HK, Winter Pack, Rear Camera.. Aka "HMS Weasel"
Gone: 2017 Mk7.5 GTD,manual, NavPro
Gone: 2014 Mk7 GTD, manual, NavPro, DCC