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

w220 low power, no kickdown

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Old Mar 11, 2021 | 12:57 PM
  #1  
Kammie's Avatar
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From: The Hague. the Netherlands
'03 s350
w220 low power, no kickdown

Hi guys,
Today I went to check out a 2003 s350, great condition and well kept car, it just has almost no power (like 5%) from stand still and no kick down. The engine seems to run smooth as butter as are the shifts. The SRS light is on, and the message 'pre safe inactive' on screen (dead battery). But I don't think these have anything to do with the power problem. Does this ring a bell with anyone? What area should I focus on?
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Old Mar 11, 2021 | 04:08 PM
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From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
How many shifts from a dead start?
Does the power feel normal at highway speed"
What is the RPM at a steady 80KPH?
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Old Mar 11, 2021 | 07:57 PM
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Do you have to floor the pedal to get it to accelerate from a stop sign ? A common problem is a defective accelerator pedal . They are electronic and fail often
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Old Mar 12, 2021 | 03:26 AM
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'03 s350
Originally Posted by wallyp
How many shifts from a dead start?
Does the power feel normal at highway speed"
What is the RPM at a steady 80KPH?
Not a lot of shifts, maybe 70 or 80, at no point does the power feel normal just floor it from start 5 sec later it's going 5km/h around 40km/u it feels like a 1 liter engine, it's around 2000 rpm at 80.
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Old Mar 12, 2021 | 03:29 AM
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Yeah kick down to crawl from stand still, I do feel the pedal button just no reaction. But in neutral the engine revs fine and is perfect.
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Old Mar 12, 2021 | 04:48 AM
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It’s your electronic accelerator pedal very common problem and takes 5 minutes to change there’s one bolt and one electrical connector


just buy a new one from the dealer or fcpeuro.com

most used ones on eBay are defective .

Last edited by tusabes; Mar 12, 2021 at 04:52 AM.
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Old Mar 12, 2021 | 05:45 AM
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'03 s350
Oh what a pleasant surprise for once I DIDN'T get a hartattack getting a quote from the mb dealer, $200 is not that bad. Gonna give it a go.
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