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  #1  
Old 07-25-2008, 09:37 PM
tivoliman's Avatar
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Question What is NSS?

Seen several threads describing the NSS is a lock-out - and a car (E420) would not start.

What is the NSS, and where is it located?

The NSS and OVP (Over Voltage Protection) are things I think I should understand. The OVP needed changed in the 300E - battery kept loosing a charge.

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Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup
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  #2  
Old 07-25-2008, 09:44 PM
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NSS= Neutral Saftey Switch. If it is bad you can only start the car in Neutral, not Park.
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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

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  #3  
Old 07-25-2008, 09:59 PM
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Quote:
Originally Posted by 79Mercy View Post
NSS= Neutral Saftey Switch. If it is bad you can only start the car in Neutral, not Park.
Only start in N is just a test for both linkage bushing wear, NSS alignment, and a possible NSS contact failure...but you can have a perfectly good NSS with a start in N only condition.

On the OVP , you do not have one ,as you have a V8 engine chassis .
Not sure on the exact chassis as you list it as a 95/E420 on another thread , and you have it here as a 96/E420. A 95 would be a 124 chassis, but a 96 would be a 210 chassis and they did not have an E420 in that chassis until '97...
Which chassis is it?
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Last edited by Arthur Dalton; 07-25-2008 at 11:29 PM.
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  #4  
Old 07-25-2008, 11:03 PM
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It's located on the side of the transmission. Follow your gear shift lever to the shifting rod to the NSS - looks like this - http://catalog.peachparts.com/RenderScriptTemplate.epc?_cmd=epccat_VehicleAAA&cookieID=2EV00YCOB2FB1B802X&yearid=1994%40%401994&makeid=MB%40%40MB%40%40X&modelid=E%2D420%2D001%40%40E+420+Sedan&catid=J%40%40Transmission&mode=PA&subcatid=J4050@@Neutral+Safety+Switch&source=www.peachparts.com&clientid=catalog.mercedesshop
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  #5  
Old 07-29-2008, 09:36 PM
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My typo - 1995 E420

Quote:
Originally Posted by Arthur Dalton View Post
Which chassis is it?
The last of the w124 years (I think)

1995 E420 - with all the horse power

I changed the OVP on my 1990 300E
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Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup

Last edited by tivoliman; 07-29-2008 at 09:37 PM. Reason: Missed adding year
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  #6  
Old 07-29-2008, 09:43 PM
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That would be the last year of 124 chassis..I think the confusion comes b/c your Sig says 1996..
Either way, no OVP on that chassis.

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