S55 AMG, S65 AMG , S63 AMG (W220, W221) 2001 - 2013 (Two Generations)

S55 Xentry DAS emissions HELP

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Apr 1, 2017 | 04:30 PM
  #1  
IvanWNY's Avatar
Thread Starter
Newbie
 
Joined: Aug 2016
Posts: 12
Likes: 0
2005 S55
S55 Xentry DAS emissions HELP

2005 S55, pulley, tune, headers, no cats.

I followed the thread which describes how to disable sec air, o2s, egr, etc. I have a bad sec air pump which throws a CEL but still sets readiness.
I disabled sec air in DAS. Would disabling sec air cause oxygen sensors not be set? I have no other CEL other than sec air.

I have all monitors set except for o2s, htr, cat. They won't set for some reason, even if I disable them in DAS. If I re enable sec air and reset the computer, all monitors eventually set but it throws a CEL for sec air, which prevents me from inspecting it.
​​​​​​
From what I have read, disabling certain things in DAS should make the monitors ready, but it doesnt. I'm at a loss and don't understand what the hangup is. any advice is appreciated, thanks.
Reply
Old Apr 1, 2017 | 08:10 PM
  #2  
E42AMG???'s Avatar
Senior Member
 
Joined: Oct 2015
Posts: 370
Likes: 30
E420
I would try the e55 forum they have lots of info on star.
Reply
Old Apr 30, 2017 | 10:17 PM
  #3  
IvanWNY's Avatar
Thread Starter
Newbie
 
Joined: Aug 2016
Posts: 12
Likes: 0
2005 S55
Exclamation

Up until today STAR did not help me because it would not set the other monitors BUT i have found a loop hole that works.


After ECU reset and driving the car for over 200 miles...still nothing set
EVAP, AIR, O2S, HRT and CAT wont set.

I was bored and sick of it and happened to try the following. I did the following with the car in the garage.

1. With car off, I pulled the N relay for sec air, started car and shut off. Scanned it with code scanner I/M sec air READY but has pending sec air code. Plugged N relay back in.

2. Disconnected evap purge valve, started car and shut it off. Scanned it... Immediately it set O2S and CAT as READY with pending evap code. Plugged evap back in.

3. Disconnected passanger side primary O2, started the car and shut it off. It set EVAP as ready. Plugged it back in.

So there you have it, this set everything except for HTR as long as there are no issues with any components. Pending codes don't matter as long as they don't come back and trigger a CEL. I think unplugging the rear O2s, starting it and shutting it off, plugging it back in might set HTR to READY.

I'm off to inspection with 3 pending codes and no CEL and with 7 out of 8 as ready.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 09:48 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE