Airmatic Relay - Mercedes-Benz Forum
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#1 (permalink) Old 09-20-2011, 03:24 AM
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Airmatic Relay

My S500 has covered 51000 miles.

The car does not have any suspension problems at the moment but is it advisable to replace the Airmatic relay as a service item? will this help prevent future Airmatic breakdowns or is this just throwing money at a problem that does not exist?

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#2 (permalink) Old 09-20-2011, 08:03 AM
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Replacement is recommended if it doesn't say Hella on it.
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#3 (permalink) Old 09-20-2011, 12:10 PM
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For the low cost of the relay I concur that an annual (or even a recurring 18 month replacement schedule) is a good thing to cover in order to avoid a pump "burn-out" issue.
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#4 (permalink) Old 09-20-2011, 07:29 PM
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mjd: do youthink it needs to be changed at every regular service interval?
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#5 (permalink) Old 09-21-2011, 03:53 AM
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Thanks for the opinions, I think I will swap mine out.

Now, just got to find a supplier for the Hella ones here in the UK

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#6 (permalink) Old 09-21-2011, 04:14 AM
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Originally Posted by xexpo View Post
mjd: do youthink it needs to be changed at every regular service interval?
Well as Grandpappy use to say "an ounce of prevention, is worth a pound of cure".

So in this case an $18 relay replaced say ever 12 months, is better than a $300 pump burning up....
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#7 (permalink) Old 09-21-2011, 07:37 AM
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I have read many threads regarding relays specially for armatic system which most of benzworld members are using Hella. I looked under my hood and found only black relays on both sides. So i suspect that these are the original one not updated so i will contact my stealership to have the MB tech take a look.

Thanks,

Eddie
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#8 (permalink) Old 09-21-2011, 08:00 AM
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Originally Posted by Curacao View Post
I have read many threads regarding relays specially for armatic system which most of benzworld members are using Hella. I looked under my hood and found only black relays on both sides. So i suspect that these are the original one not updated so i will contact my stealership to have the MB tech take a look.

Thanks,

Eddie
This is the relay in question;
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ERIC.

___________________________________________
"I am enclosing two tickets to the first night of my new play; bring a friend, if you have one."
- George Bernard Shaw to Winston Churchill.

"Cannot possibly attend first night, will attend second ... if there is one."
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#9 (permalink) Old 09-21-2011, 08:30 AM
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Hella Relay

Hi Guys,

Mine is old also, I am consider to replace mine with Hela one but first, where you buy hela relay if some one post link and how many relays are we talking in our car? Thanks.

2000, S500 (SOLD)
2008, E350 4MATIC
2007, ML350 4MATIC
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#10 (permalink) Old 09-21-2011, 08:34 AM
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Originally Posted by klvaleri View Post
Hi Guys,

Mine is old also, I am consider to replace mine with Hela one but first, where you buy hela relay if some one post link and how many relays are we talking in our car? Thanks.
One, see #8^^

ERIC.

___________________________________________
"I am enclosing two tickets to the first night of my new play; bring a friend, if you have one."
- George Bernard Shaw to Winston Churchill.

"Cannot possibly attend first night, will attend second ... if there is one."
- Winston Churchill, in response.
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