S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

02 S600 acceleration issue

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Old 01-20-2024, 03:09 PM
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2002 S600, 1994 S600
02 S600 acceleration issue

My S600 was running great. No oil leaks and only 56k miles. I started it up and moved it 50ft. in that time it went from running right to running wrong. No acceleration. Starts and Idles fine. Its throwing codes for all cylinders P205X. looking at the active screen on my Autel scanner, engine running, the map sensor is all over the place. It is new, (possibly faulty). The codes lead to coil packs, but having such low miles, and no oil leaks from the valve covers, I find it hard to believe the packs took a crap in a instant, or the 02 sensors. After reading all the threads it seems accelerator/pedal assembly? but what about the codes?
Old 01-21-2024, 02:08 AM
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Your post doesn’t make sense. Is there any misfire or rough running ?? If it’s smooth but just . No acceleration is a bad pedal . But that is painfully obvious you can floor the pedal and it will barely creep forward . A coil pack will be down on power like just a six cylinder but it’s not zero power like a bad pedal

pedal usually throw no codes

misfire from coils trigger p301-312 errors not 205
Old 01-21-2024, 02:50 PM
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2002 S600, 1994 S600
correct you are, no rough idle or misfires when running but the codes on my Autel Maxis show up as P205X but also notes the p301-312. Thankyou for your response. When reading other posts I didn't see anyone mention the coil issue as running like a 6 cylinder, which would make more sense. The idea that both coil packs would die at the same time makes no sense. Not to mention happening in a 50 ft run. Sometimes the slightest detail brings everything into perspective. I will focus my attention on the drive by wire and see if I can post more detail on its behavior.
Old 01-22-2024, 01:46 AM
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Mercedes
It can be the voltage transformer, which controls the coil packs, it is at the center top of the engine and fails as frequently as the coil packs. Again, you didn’t explain what your symptoms are, does the car just have low power, like a six cylinder ? That’s a bad coil or voltage transformer

or is there virtually no power at all, where you can floor the accelerator and the car barely creeps forward? That would be a bad pedal
Old 01-22-2024, 11:49 AM
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2002 S600, 1994 S600
Originally Posted by tusabes
It can be the voltage transformer, which controls the coil packs, it is at the center top of the engine and fails as frequently as the coil packs. Again, you didn’t explain what your symptoms are, does the car just have low power, like a six cylinder ? That’s a bad coil or voltage transformer

or is there virtually no power at all, where you can floor the accelerator and the car barely creeps forward? That would be a bad pedal
o.k. starts and idles fine. When you accelerate the engine rpm increases, but at its own rate. Whether you floor it or press slowly it just dogs along. Slowly increasing speed. B4 it happened (all at once) it ran like you would expect, super responsive. While running with the maxis attached, at idle all the cylinders show misfires adding up, but if I Rev to 2500 they clear to zero misfires. All the cylinders misfire in unison, not random. When reved up they all clear in unison.
Old 01-22-2024, 02:32 PM
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Sounds like a bad pedal
Old 02-01-2024, 01:50 AM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
I have the same issue in my 2006 s600. I thought it was my coilpacks and couldn't get rid of the engine codes no matter what I tried with the coilpacks. Turns out I have a bad accelerator pedal and a faulty voltage transformer (the square metal box that sits on top of the engine) I bought a voltage transformer off of Amazon but turns out they're rebuilt units. It fixed my problem but acts up sometimes. I have to clear the code and it runs good again. I plan on getting a boost box from Clark Rupp soon and kiss my problems goodbye.
Old 02-02-2024, 04:22 AM
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2005 S500 Designo
Mercedes voltage transformers have gotten normally priced
Old 02-16-2024, 04:57 AM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
I picked up the boost box (voltage transformer) from Clark Rupp and installed it a few days ago. I have to say I'm impressed with the build quality boost box. I was running some tests which required to to hold the rpm at 2500 for a couple of minutes and that's when my check engine light came back on. I checked the codes and it was misfires on 1 and 9. There was another code that had to do with my accelerator pedal. I had a pedal commander installed which I immediately uninstalled. It's either the pedal commander or the new pedal is faulty. I really don't understand why car manufacturers got rid of the throttle cable and went with drive by wire which has numerous points of failure. I've never heard anyone say they had a throttle cable failure. My w220 s600 is my first drive by wire car and I've already had to deal with soo many issues with the stupid pedal. I wouldn't complain if it was like a $20 part but it's like $180 and up. Why the hell is it so expensive when it's just a bunch of plastic with wither a potentiometer or a hall sensor with a magnet in it. Both which are really cheap parts. I'm wondering if my issue with the pedal is causing the misfires. I guess I'll find out next time the check engine light comes back on. Problem is I need to get the car inspection done so I can renew my registration. I love the car but hate some of the tech in it. Like the coilpacks, why didn't they use individual coilpack like the rest of the world which seem far superior to the s600 coilpacks. My sr20det in my nissan s13 only had an issue with one coilpack which only cost me $35 to replace vs like $1200 on the s600. Why the hell does it cost $750 to change the tranny fluid? It's a chrystler transmission isn't it? I can't imagine it costing that much to change the tranny fluid in a dodge charger. This car comes with way too many headaches
Old 02-16-2024, 12:22 PM
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Mercedes did change to individual coil packs in the newer v12 engines. Misfires on individual coils indicate bad spark plugs or bad coil packs.

when the voltage transformer is bad, an entire bank of cylinder such as one through six or seven through 12 will all show misfires The transmission is a Mercedes transmission. It is Chrysler that use the Mercedes transmission when they were part of daimlerChrysler. You can get a fluid change much cheaper at independent shop.
Old 02-17-2024, 10:42 AM
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2002 S500 Sport AMG package W220, (prev) 2012 E350 coupe C207
750 tranny service...??

No way anyone should be paying that much lmao, you should be doing it yourself if that's the case. Literally the easiest tranny service ever. I got all liqui-moly fluid and oem filter, gaskets, and adapters all for less than 200$ and that wasn't even thru my job or using my employee discount it was from FCP Euro.
Old 02-18-2024, 07:05 PM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
I've attached a list of part my friend who works at mercedes recommends me to buy and it's $554 and he's charging me 200 for the labor which comes out to $754.

I wonder how we could install the new individual coilpack. Would we need the engine harness and ecu? I mean they are all the ecaxt same engine from 2003-2024. I would assume the ecu would work if you change the engine harness or re-pinned your existing harness. I've considered doing a stand alone ecu since 2 sets of coilpacks is over 2k which is about the same price as a stand alone


Old 02-19-2024, 09:29 AM
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2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
Just keep on throwing parts at the car without knowing/understanding why.
You'll be broke soon.
Good luck!
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Old 02-19-2024, 07:18 PM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
It's a good thing the s600 doesn't have alot of aftermarket parts support otherwise I'd really be broke. The maintenance is killing me as it is. I mean spark plugs alone cost me like $300. 21 litters of tranny fluid isn't cheap either. I've never heard of a tranny that needs that much fluid. I do the work myself so i save on labor. just looking at the price for parts and oil I can't imagine what the shops would charge to do the work
Old 02-19-2024, 09:59 PM
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Get the transmission service parts from fcpeuro
they have a lifetime warranty on All parts and even on fluid
Old 02-19-2024, 10:33 PM
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2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
Originally Posted by Hank Houston
It's a good thing the s600 doesn't have alot of aftermarket parts support otherwise I'd really be broke. The maintenance is killing me as it is. I mean spark plugs alone cost me like $300. 21 litters of tranny fluid isn't cheap either. I've never heard of a tranny that needs that much fluid. I do the work myself so i save on labor. just looking at the price for parts and oil I can't imagine what the shops would charge to do the work
The transmission does not hold 21 ltr of fluid.
That is the qty recommended for a full double flush of tranny and torque converter such as after failure or contamination.

to inform yourself better, maybe start a new thread (your own for your car).
Old 02-19-2024, 11:18 PM
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OP the transmission has a drain plug in the pan and the torque converter. Between the two of these virtually all of the fluid gets drained.

I drained and filled my five speed in the 221 S65 with every or every other engine oil change. Easy to do.

Be thankful... Your car has a dipstick tube to fill it with. My 222 car does not. Stupid.

Do some reading on how coil packs and power stages work. All that junk is very long in the tooth in your 220 car.

You have a 220 car. Mercedes learned a LOT with that one and the 221.
Old 02-20-2024, 11:54 AM
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Hold up, are you telling me I can send back used oil to fcp Euro? I thought it was crazy enough that they covered wiper blades. You gotta explain to me how the warranty works with fluids.

This is my first automatic car so I'm not familiar with the torque converter. I just know it's a balloon looking part. Do I need to spin it to get to the drain plug for it? Did you not change the filter when you changed the tranny fluid? Can I just pump all the oil out from the dipstick tube? What brand and weight fluid do I use? How many quarts go into the tranny. Do I need to fill the torque converter then the tranny or do I just fill it all up through the tranny dipstick tube? How many quarts and how do I know if it's overfill, underfulled, or just right? Like the engine asks for 9 liters so I buy 2 5 quart jugs of mobil one 0w40 and dump its all in. 10 quarts = 9.464 liters which is almost half a liter more than the 9 required but my dash always tells me I'm 1 quart short which confuses the **** out of me. I'm always debating if I should add the extra quart or not
Old 02-20-2024, 01:21 PM
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222 S-65
There is a spot at bottom of bellhousing where you will see the drain plug for the TQ when turned to the right spot. Another DP in the pan.

I don’t know the correct quantity of fluid for your 220 car. I used Pentosin ATF 134 in the five speed box in the 221 S65. Made nice shifts. Buy the five liter bottles. I changed the filter every 20-30K with fresh fluid every oil change or two. I always noticed a difference in shift quality after a fluid change.

Just fill it up via trans dipstick tube and start the engine. It works it out.

My 221 car and the 222 car ask for more oil then is advertised as ‘full.’ I give it the extra liter. Big sump.
Old 02-20-2024, 03:47 PM
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FCP euros sells a complete transmission service kit, including the fluid and the filter. They explain how their warranty works right on their website regarding fluids and everything else. The only thing you can’t have a lifetime warranty on is spray cans because there is no way to put the old product in the can.
Old 03-14-2024, 07:30 PM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
How much do you guys pay for shipping? I'm trying to figure out if it's worth it. I pay $65 for oil and filter. It would have to be like $20 for it to be worth my time
Old 03-15-2024, 02:44 PM
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Fcpeuro it’s free shipping on all orders over $$49
Old 03-17-2024, 03:58 AM
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Sorry I should have been more specific with my question. I want to know how much you guys are paying to ship the oil back to fcp Euro for the warranty. I'm trying to figure out if it's worth all the trouble of packaging old oil and bringing it to ups or usps. Right now for me it costs $65 for two 5 quart jugs and a K&N oil filter. I pump the old oil into a 5 gallon bucket. I bring the old oil to autozone after my second oil change or whenever I'm free. No lines, no hassle, and they bring the oil right to my door. So return shipping would have to be pretty cheap for me to want to deal with the warranty
Old 03-17-2024, 04:31 AM
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USPS flat rate box
Old 03-17-2024, 01:09 PM
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S-600 w220, Nissan s13 coupe, and Nissan s13 convertible
Ah, I didn't know about those. Thanks for the info

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