Engine light, rumbles, how much is too much?
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Newbie
Joined: Jan 2022
Posts: 5
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W212 E350 ‘14
Engine light, rumbles, how much is too much?
First of all thank you in advance. I’ve been getting an check engine light for about a month. Normally I would never leave anything unaddressed on my car this long by it’s been a hectic time of year. It started as idle rumble on cold start which would go away once normal operating temperature was reached. Now it’s come to the point where it’s jerky even while driving, but intermittently.
Between all this i did swing my local mechanic and he found an ignition coil needed to be changed. He said it would be a quick job but upon popping the hood realized a lot more needs to be removed to get it done, and he’s right, for the e350 ‘14, it does. I wasn’t comfortable with him doing all that, so passed.
My choice now is going to a dealer. And I’ve been quoted several prices. Before getting into that, what’s the best plan of action everyone? The car is only at 35,000 miles.
Change just the one coil? Change all the coils?
Change spark plugs too?
For a coil change I’ve been quoted 500, throw in spark plugs then another 600
For all 6 coils I’ve been quoted 1100, throw in 6 spark plugs 1500
Which of these is best to do, as I’m concerned 1 new coil might not sit right with the other old coils. Do spark plugs need to be changed around this time, since they are going to be all in there anyway right now might be a good idea? How is the pricing, I know dealerships always charge a premium but is it way more than expected?
Thank you so much for reading! Any help is appreciated.
Between all this i did swing my local mechanic and he found an ignition coil needed to be changed. He said it would be a quick job but upon popping the hood realized a lot more needs to be removed to get it done, and he’s right, for the e350 ‘14, it does. I wasn’t comfortable with him doing all that, so passed.
My choice now is going to a dealer. And I’ve been quoted several prices. Before getting into that, what’s the best plan of action everyone? The car is only at 35,000 miles.
Change just the one coil? Change all the coils?
Change spark plugs too?
For a coil change I’ve been quoted 500, throw in spark plugs then another 600
For all 6 coils I’ve been quoted 1100, throw in 6 spark plugs 1500
Which of these is best to do, as I’m concerned 1 new coil might not sit right with the other old coils. Do spark plugs need to be changed around this time, since they are going to be all in there anyway right now might be a good idea? How is the pricing, I know dealerships always charge a premium but is it way more than expected?
Thank you so much for reading! Any help is appreciated.
Senior Member
Joined: Jul 2007
Posts: 283
Likes: 102
From: Maryland
S 550, S65 Coupe
I would try and find a good local independent Mercedes shop. Changing a coil is not all that difficult but may take a little bit to get to it but nothing complicated. Plugs are recommended to be replace at 50K miles i do believe. I think you would be fine to just have the one coil replaced but you should plan on the plugs at 50,000 miles so its up to you and what you want to spend. Where are you located? Maybe someone on here can recommend a good independent Mercedes shop in your area.
Banned
Joined: Oct 2005
Posts: 4,957
Likes: 1,640
No need to replace more than the one coil. 50K is as said the spark plug interval. You can wait on that also, but the car is coming on 8 years so you may advance the plug replacement at any time you are ready. $500 for a plug change is not unreasonable from the dealer.
Out Of Control!!
Joined: Apr 2019
Posts: 12,253
Likes: 6,912
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
.... car needs a Doc!
First of all thank you in advance. I’ve been getting an check engine light for about a month. Normally I would never leave anything unaddressed on my car this long by it’s been a hectic time of year. It started as idle rumble on cold start which would go away once normal operating temperature was reached. Now it’s come to the point where it’s jerky even while driving, but intermittently.
Between all this i did swing my local mechanic and he found an ignition coil needed to be changed. He said it would be a quick job but upon popping the hood realized a lot more needs to be removed to get it done, and he’s right, for the e350 ‘14, it does. I wasn’t comfortable with him doing all that, so passed.
My choice now is going to a dealer. And I’ve been quoted several prices. Before getting into that, what’s the best plan of action everyone? The car is only at 35,000 miles.
Change just the one coil? Change all the coils?
Change spark plugs too?
For a coil change I’ve been quoted 500, throw in spark plugs then another 600
For all 6 coils I’ve been quoted 1100, throw in 6 spark plugs 1500
Thank you so much for reading! Any help is appreciated.
Between all this i did swing my local mechanic and he found an ignition coil needed to be changed. He said it would be a quick job but upon popping the hood realized a lot more needs to be removed to get it done, and he’s right, for the e350 ‘14, it does. I wasn’t comfortable with him doing all that, so passed.
My choice now is going to a dealer. And I’ve been quoted several prices. Before getting into that, what’s the best plan of action everyone? The car is only at 35,000 miles.
Change just the one coil? Change all the coils?
Change spark plugs too?
For a coil change I’ve been quoted 500, throw in spark plugs then another 600
For all 6 coils I’ve been quoted 1100, throw in 6 spark plugs 1500
Thank you so much for reading! Any help is appreciated.
@ 35kMi your car does not need $1500 plugs or coils... It needs a MB shop that knows these cars.
Your rumble may have something to do with camshaft phasers and engine oil being too low or the wrong MB grade (5w40).
These cars need timely maintenance... when you wait the bill only gets longer and turn into expensive repairs. Cars have no self-healing process, don't expect issues to get better.
Don't ruin your ownership experience... deal with a shop that understands W212 maintenance using OEM spare parts only.
Last edited by CaliBenzDriver; Jan 19, 2022 at 12:17 PM.
Member
Joined: Sep 2014
Posts: 75
Likes: 8
From: SF Bay Area, CA
2016 E-350
@CaliBenzDriver I'm in the bay area too, do you have any good shops to recommend?
