new W205 'Pop' from undercarriage when accelerating from stop

[noobo]

Hi all

 

Seeking some advice from experienced folks here. Have a month old 2018 W205. Car cranks and moves off from parking without much issues. However, shortly after moving off from stop (i.e. traffic lights), it'll have a distinctive 'pop' or 'spring-like' metallic sound that seems to come from the undercarriage.

Problem goes away after driving for a few minutes though, and it is usually observed after car have been parked for some time or during cooling weather.

Any guys here facing such issues? Appreciate all feedback.

[GOGOGO]

i got my car from C&C this April. Nope i dont have this problem.

[noobo]

Thanks for the reply. May I ask if you turn off the eco start stop as well as the auto parking mode?

[GOGOGO]

the auto start stop is always on.

auto parking mode i didnt off. everytime it prompt me i always ignore and park on my own.

 

Hope this helps.

[daimlerfan]

On 7/10/2018 at 11:16 AM, noobo said:

Thanks for the reply. May I ask if you turn off the eco start stop as well as the auto parking mode?

Came across a topic similar (somewhat) to your question. FYR.. 

https://www.ebay.com/itm/MERCEDES-cars-ECO-start-stop-OFF-just-an-OBD-plug-most-of-MB-cars-supported/252811119026?hash=item3adcb789b2:g:M~EAAOSw2iJa-n9S

 

[MapleLeaf]

Two likelyhood:  1:  the auto start-stop activating the engine, or 2: auto releasing of the brake-hold.