Glow plug relay. Which one

Discussion in 'Engine' started by Markssl, Feb 10, 2017.

  1. Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014
    I need to buy a new relay. Loads on EBay.
    I called a Merc specialist who tells me there are two types one for steel glow plugs and one for ceramic glow plugs. I can get a Beru one for about £100. Merc want £195. Or I can get a relay and plug set. [​IMG][​IMG]

    Any advice please?


    Sent from my iPhone using Tapatalk
     
  2. Litcan91

    Litcan91 MB Enthusiast

    Messages:
    1,262
    Joined:
    Aug 27, 2014
    Car:
    MB
    I'm pretty sure that all of the MB / Beru relays will be the same, with the only difference being in the old and new superseded version (which you have pictured).
     
  3. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014
    I thought they were both the same in the pics. GSE114. No?
    Which one is the superseded one pls?


    Sent from my iPhone using Tapatalk
     
  4. Litcan91

    Litcan91 MB Enthusiast

    Messages:
    1,262
    Joined:
    Aug 27, 2014
    Car:
    MB
    Both of the ones in your pics are the same, they are the new version. The old one is more of a square block, considerably larger in size.
     
  5. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014


    Thanks. My car is a 10/08 so it will be the newer one.


    Sent from my iPhone using Tapatalk
     
  6. Litcan91

    Litcan91 MB Enthusiast

    Messages:
    1,262
    Joined:
    Aug 27, 2014
    Car:
    MB
    Not sure on when they have started fitting the new ones, but the old ones seem to be very unreliable. The new unit replaces the old one as plug & play.
     
  7. Auto-mobile

    Auto-mobile MB Enthusiast

    Messages:
    1,600
    Joined:
    Oct 1, 2011
    Location:
    Birmingham
    Car:
    2x c43 Amg clio 172 turbo 314bhp
    Not had to replace the superseded relay for failure, are ou sure you don't have the old type fitted?

    Just to add you won't have the ceramic glow plugs fitted your engine so either in the pictures are fine.
     
  8. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014
    My car is the oct 08 with v6 3.0. I should imagine it's the later one. I've bought a GSE114 from Germany. I've already got new glow plugs so hopefully I'm sorted.
    Thanks


    Sent from my iPhone using Tapatalk
     
  9. expandyman

    expandyman New Member

    Messages:
    20
    Joined:
    May 13, 2009
    Location:
    surrey
    Car:
    e280 cdi 2005
    I brought a new style Beru relay of eBay for sub 100. Easy to fit and solved an issue.
     
  10. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014
    Fitted my new Beru relay today. Not tried it from stone cold yet. Fingers crossed it works!
    The one that came off looked nothing like the new one. Here's some pics[​IMG][​IMG][​IMG]


    Sent from my iPhone using Tapatalk
     
  11. Auto-mobile

    Auto-mobile MB Enthusiast

    Messages:
    1,600
    Joined:
    Oct 1, 2011
    Location:
    Birmingham
    Car:
    2x c43 Amg clio 172 turbo 314bhp
    That's the old style one that fails.
     
  12. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014
    Thanks for your help. It's all a bit mind boggling. My cars on 199k miles I'm wondering what's the next part to go wrong!!


    Sent from my iPhone using Tapatalk
     
  13. peterboat

    peterboat New Member

    Messages:
    2
    Joined:
    Feb 14, 2017
    Car:
    w208 converable
    According to my scanner glowplugs 5 and 6 have gone down on my mates w211 its a bad starter from cold taking about 6 attempts before starting with clouds of white smoke after that its first time every time. I would have thought with just 2 plugs down it would still start so I am suspecting a relay fault as well, any thoughts on this anybody?
     
  14. Auto-mobile

    Auto-mobile MB Enthusiast

    Messages:
    1,600
    Joined:
    Oct 1, 2011
    Location:
    Birmingham
    Car:
    2x c43 Amg clio 172 turbo 314bhp
    Check the fault codes on the car and check the glow plugs with a multimeter.
     
  15. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014


    I noticed with mine If it was a glow plug problem the warning light stayed on. If it's the relay and the gp's are ok the light extinguishes as normal. Either problem the car is a pig to start from cold!
    I bought my relay off eBay. [​IMG]


    Sent from my iPhone using Tapatalk
     
  16. avoidme

    avoidme New Member

    Messages:
    19
    Joined:
    Oct 21, 2012
    Location:
    Reading
    Car:
    W203 C220 CDi Avantgarde Sport
    Check them all with a simple test light. They are very low resistance internally,
    going with the test light to the battery+ and then touching the tip of the glowplug your test light should light, otherwise bad plug
     
  17. Litcan91

    Litcan91 MB Enthusiast

    Messages:
    1,262
    Joined:
    Aug 27, 2014
    Car:
    MB
    The old relay doesn't show any signs at all, in fact, when changing to the new one, it is likely that the glow plug light would stay on, as it would identify faulty glow plugs also.

    You thought you had the new type of relay on a 2008, just seen a similar thread on the other forum, with a c207 2010 which was still fitted with the old unit from the factory.
     
  18. OP
    OP
    Markssl

    Markssl Active Member

    Messages:
    493
    Joined:
    Jul 23, 2014


    You're right. No signs at all.
    It's now starting perfectly. I had new glow plugs last year.


    Sent from my iPhone using Tapatalk
     
  19. Litcan91

    Litcan91 MB Enthusiast

    Messages:
    1,262
    Joined:
    Aug 27, 2014
    Car:
    MB
    It has lasted for some 190k miles, which is a result in itself, they usually fail much sooner.
     
Tags:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.