Gla 200 ticking
09-21-2020, 11:11 AM
#1
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gla 200
Gla 200 ticking
Hello
I have problem with my new car. Its my first Mercedes and when the vehicle is in the garage after the end of the drive you can hear a ticking knock from under the hood. When he opens any door, the sound stops
I record that sound:
I have problem with my new car. Its my first Mercedes and when the vehicle is in the garage after the end of the drive you can hear a ticking knock from under the hood. When he opens any door, the sound stops
I record that sound:
09-22-2020, 06:55 AM
#2
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It just sounds to me like the radiator/intercooler fan(s) continuing to run after engine shutdown, which is normal after a long drive and/or on a warm ambient day. It goes off automatically at a preset engine coolant temperature. Check for debris on the fan blades as that may be the cause of the thumping sound. Worst case would be a fan blade is out of alignment and hitting on its shroud.
Note that the catalytic converter may also make a ticking sound as its dissimilar metal cools.
And you may also hear a hissing sound as the turbo pressure equalizes.
Note that the catalytic converter may also make a ticking sound as its dissimilar metal cools.
And you may also hear a hissing sound as the turbo pressure equalizes.
Last edited by Huey52; 09-22-2020 at 06:58 AM.
