Common problems M177
I want to start a discussion about this video.
How many people have this problem on their cars?
How many kilometers/milleage?
Last edited by jopsis_c63s; Feb 20, 2024 at 04:56 PM.




The only issue I've had iin that video are both active engine mounts cracked and I've had the car for over 7 years but I'm preparing I guess. Mine is a dinosaur old prefacelift coupe.
However, I've had plenty of other issues.
But from that video, the only thing I've seen happen in real life so far is leaks in other topics here, plastic intake manifolds cracking at 2 bar boost and engine mounts (mine).
That saying, here is a list of issues I've had outside warranty which I had to pay for over 7 years
◾ 1 injector stuck
◾ Purge valves
◾ Coil packs replaced 2 times
◾ Rear diff replaced
◾ Punctured factory front aux coolers
◾ Leaking coolant hoses
◾ Front fender makes a squeak
◾ Creaks in the front driver's seat
◾ All 3 exhaust flaps jammed twice
◾ Fading night package trim on front bumper
◾ Front ball joints
◾ Fading front black roof trim (goodwill warranty)
◾ Cracked leather seats
◾ Both active engine mounts
◾ High pitched whine at 70kmh and 110kmh since new even after diff changed
◾ Factory RXC wheels buckled twice
But this is over a span of 7 years and some things are maintenance but I put my whole list up anyway.
After I fixed all my issues I tuned the car to Stage 1 and now I'm running hybrid turbos around 700hp at the crank on low boost. I won't be doing anymore modifications and just concentrate on maintenance and restore.
Below is an example of cracked facelift (smaller) manifolds in that video from high boost tune etc. But I'm positive prefacelift (larger) manifolds would crack at that boost pressure too
Last edited by Jimmy_c63s; Feb 21, 2024 at 08:20 AM.
The only issue I've had iin that video are both active engine mounts cracked and I've had the car for over 7 years but I'm preparing I guess. Mine is a dinosaur old prefacelift coupe.
However, I've had plenty of other issues.
But from that video, the only thing I've seen happen in real life so far is leaks in other topics here, plastic intake manifolds cracking at 2 bar boost and engine mounts (mine).
That saying, here is a list of issues I've had outside warranty which I had to pay for over 7 years
◾ 1 injector stuck
◾ Purge valves
◾ Coil packs replaced 2 times
◾ Rear diff replaced
◾ Punctured factory front aux coolers
◾ Leaking coolant hoses
◾ Front fender makes a squeak
◾ Creaks in the front driver's seat
◾ All 3 exhaust flaps jammed twice
◾ Fading night package trim on front bumper
◾ Front ball joints
◾ Fading front black roof trim (goodwill warranty)
◾ Cracked leather seats
◾ Both active engine mounts
◾ High pitched whine at 70kmh and 110kmh since new even after diff changed
◾ Factory RXC wheels buckled twice
But this is over a span of 7 years and some things are maintenance but I put my whole list up anyway.
After I fixed all my issues I tuned the car to Stage 1 and now I'm running hybrid turbos around 700hp at the crank on low boost. I won't be doing anymore modifications and just concentrate on maintenance and restore.
Below is also an example of cracked manifolds in that video from high boost tune etc.
https://www.instagram.com/p/CgbsRGvPY44/
i had to replace my left side motor mount , took some work but isn’t to hard to replace as long as you got a lift , right side is even easier
Last edited by LR63s; Feb 22, 2024 at 02:29 PM.




These are my two cracked active engine mounts. Did yours have those cracks too?
Last edited by Jimmy_c63s; Feb 20, 2024 at 11:57 PM.
Rear shocks blew at 18k
Turbo inlet boot tore at 21k same one in the video with the breather hose connected to the crankcase oil separator
Currently turbo’s “whistle”under load




Trending Topics
The only issue I've had iin that video are both active engine mounts cracked and I've had the car for over 7 years but I'm preparing I guess. Mine is a dinosaur old prefacelift coupe.
However, I've had plenty of other issues.
But from that video, the only thing I've seen happen in real life so far is leaks in other topics here, plastic intake manifolds cracking at 2 bar boost and engine mounts (mine).
That saying, here is a list of issues I've had outside warranty which I had to pay for over 7 years
◾ 1 injector stuck
◾ Purge valves
◾ Coil packs replaced 2 times
◾ Rear diff replaced
◾ Punctured factory front aux coolers
◾ Leaking coolant hoses
◾ Front fender makes a squeak
◾ Creaks in the front driver's seat
◾ All 3 exhaust flaps jammed twice
◾ Fading night package trim on front bumper
◾ Front ball joints
◾ Fading front black roof trim (goodwill warranty)
◾ Cracked leather seats
◾ Both active engine mounts
◾ High pitched whine at 70kmh and 110kmh since new even after diff changed
◾ Factory RXC wheels buckled twice
But this is over a span of 7 years and some things are maintenance but I put my whole list up anyway.
After I fixed all my issues I tuned the car to Stage 1 and now I'm running hybrid turbos around 700hp at the crank on low boost. I won't be doing anymore modifications and just concentrate on maintenance and restore.
Below is also an example of cracked manifolds in that video from high boost tune etc.
https://www.instagram.com/p/CgbsRGvPY44/
My wagon is from January 2017 and have 110.000km
It's mine since 2019 with 45.000km and Stage 1 since 50.000km.This is my list:
- Front radiators cracked.
- Put Alpha Competition
- Purge valves (I hate the "tiki tiki" sound hahaha)
- Exhaust flaps
- Only put Ceramic Grease
- Diff mount
- Replace for new one
- Belts and pulls
- Replace all (both sides)
The Best of Mercedes & AMG




My wagon is from January 2017 and have 110.000km
It's mine since 2019 with 45.000km and Stage 1 since 50.000km.This is my list:
- Front radiators cracked.
- Put Alpha Competition
- Purge valves (I hate the "tiki tiki" sound hahaha)
- Exhaust flaps
- Only put Ceramic Grease
- Diff mount
- Replace for new one
- Belts and pulls
- Replace all (both sides)
Does anyone know the general life span of the active engine mounts in the s model? I do hoon around alot though.
problems:
1. Alignment problem since delivery. steering keep going off centered. Turns out to be the rear arm that adjust rear toe angle. Replaced it with carbahn after market arm. Problem gone
2. Up until 70k miles, clunk in steering when turning to either side. Worn steering u-joint.
3. Purge valve causing loose gas cap message and misfiring after filling up gas.
4. Misfired on heavy throttle. Bad Ignition coil
5. All 4 shocks went bad
6. Engine mounts showing signs of wear. Need to replace that
#2-6 all occur during the 70k miles period
Does anyone know the general life span of the active engine mounts in the s model? I do hoon around alot though.




Does anyone know the general life span of the active engine mounts in the s model? I do hoon around alot though.
Last edited by superswiss; Feb 21, 2024 at 08:16 PM.
. So early April will be in for 5th year MB Service (about 30,000 miles)that includes Spark Plug change. So I plan to mention that the AMG Tech closely inspect the issues listed on this post. I purchased the MB Extended warrant so hopefully anything noticed will be covered.
Did you fell a substatial difference in performance right after the new set of spark plugs were installed? I ask becuse I know it is required to be done at 5 years/50,000 miles Service but my car at 30 000 miles is running like butter so not sure how much better it will perform for me with new plugs?
Last edited by jj18; Feb 22, 2024 at 12:51 AM.




. So early April will be in for 5th year MB Service (abive 30,000 miles)that includes Spark Plug change. So I plan to mention that the AMG Tech closely inspect the issues listed on this post. I purchased the MB MB Extended warrant.
Did you fell a substatial difference in performance right after the new set of spark plugs were installed? I ask becuse I know it is required to be done at 5 years/50,000 miles Service but my car at 30 000 miles is running like butter so not sure how much better it will perform for me with new plugs?
Last edited by LR63s; Feb 22, 2024 at 02:45 PM.
https://www.youtube.com/watch?v=Qb0WrxMkl40
I want to start a discussion about this video.
How many people have this problem on their cars?
How many kilometers/milleage?
I have 2015 46K miles (22k miles my ownership 3yrs)
main battery
aux battery
driver side engine mount
one ignition coil
all spark plugs
2 rear driver side axles
differential




Yeah, if you haven't done so, get the tires road force balanced and rule that out first. Spin balancing doesn't align the high and low points of the tires with the wheels and road force balancing will also bring to light if you have a bent wheel or the tire is faulty. You wanna get the road force below 20 and ideally below 10.




https://static.nhtsa.gov/odi/tsbs/20...79973-9999.pdf
https://static.nhtsa.gov/odi/tsbs/20...79973-9999.pdf
Last edited by sammyboy_dds; Apr 22, 2024 at 01:20 PM. Reason: add quote



