E89 roof relay change

[RobbiZ4]

 

[ClumUK]

I'm glad a saw this thread! I checked mine the other day and they were both dated 2010 so ordered replacements at the weekend. Worth doing as a precaution for only £27.98.

 

[scootr]

I'm glad a saw this thread! I checked mine the other day and they were both dated 2010 so ordered replacements at the weekend. Worth doing as a precaution for only £27.98.

That's what I thought and then I found my 2010 originals very badly pitted We work with DC contactors and relays - I know how this ends

 

[RobbiZ4]

We work with DC contactors and relays - I know how this ends

Thanks for this feedback.

 

[engine killer]

well the relays just arrived and they are manufactured on last year's week 29th and 35th.

the old are actually from the beginning back in 2009.

i have them opened and may i assume they are not too bad at all?

 

[RobbiZ4]

 

[engine killer]

Hi Robbi, thanks for your advice again.

 

[R.E92]

Just spotted this thread linked from elsewhere. My relays are 10 years old now so just ordered a set for some DIY.

Loving all this free time for car work and empty roads

 

[geordie_zed]

Thanks @Smartbear for this tip. Very easy 5 minute job indeed ...

I just swapped out my original 0923 relays for some new 1948 ones ...


They were in pretty poor condition after 10 years and almost 50k miles:


And I think I might well have had a lucky escape as one of them had this broken resistor rolling around in the case! I'm pretty sure I didn't break it when opening it up as it's under the main parts of the relay!

 

[scootr]

Send out for a lottery ticket - your luck is strong :lol:

 

[RobbiZ4]

Congratulations!

 

[enzed4]

Thanks @Smartbear for this tip. Very easy 5 minute job indeed ...

I just swapped out my original 0923 relays for some new 1948 ones ...
IMG_20200327_150056 - Copy.jpg

They were in pretty poor condition after 10 years and almost 50k miles:
IMG_20200327_151441 - Copy.jpg

And I think I might well have had a lucky escape as one of them had this broken resistor rolling around in the case! I'm pretty sure I didn't break it when opening it up as it's under the main parts of the relay!
IMG_20200327_151112 - Copy.jpg

You must have had the 'Borg' relay - resistance was futile...
:exitright:

 

[Anonymous]

Well followed the pack and replaced mine using the SmartBear approach, couldn’t get mine to click out as per RobiZ4..must have added 2 minutes to the whole process..

Superficially don’t look too bad IMHO..I’m sure Gruppen SturmBaher RobiZ4 will advise

Excuse the fingers..

 

[RobbiZ4]

Cool. Indeed these contacts look better than in the average relay.
But no wonder, your car is only from 2012! :wink:

 

[Anonymous]

Cool. Indeed these contacts look better than in the average relay.
But no wonder, your car is only from 2012! :wink:

I think it spent a lot of its life in Manchester..an area with high rainfall...so probably the roof was never operated..

I wonder how much contribution motoring the roof with a low battery contributes to induction arcing?

 

[scootr]

Cool. Indeed these contacts look better than in the average relay.
But no wonder, your car is only from 2012! :wink:

I think it spent a lot of its life in Manchester..an area with high rainfall...so probably the roof was never operated..

I wonder how much contribution motoring the roof with a low battery contributes to induction arcing?

I think low battery operation would have a big impact on arcing because ohms law.

Your roof was down on a sunny day in 2013 and again in 2015
Look at the huge difference between your like new contacts and my 2010 relay

 

[RobbiZ4]

 

[scootr]

Well - then it's freakn hammered More material transferred there than any place.
It might be interesting if some of us post pics in a year or two... assuming a couple of top down days occur.

 

[RobbiZ4]

 

[R.E92]

Replaced mine on the weekend. The old ones were in good shape considering they are 10 years old, should get another 10 years out of these.