E89 roof relay change

[PointedMarlin]

Is there not an easier to follow UK guide to replacing these?
Maybe including where to buy and what spec of part?
Just a thought...

Hi Craig,

I’ll link the ones I ordered off eBay here

https://www.ebay.co.uk/itm/202058464079 ... %3A2334524

As far as fitting them I can repost pictures when I have time but I found it very straightforward a 5 minute job

Remove boot carpet
Remove Foam
Reach down to the top relay & unclip
Reach down to the bottom relay & unclip

I made sure I made a note of how they had come out (which side was facing upwards)

Then refitted them, bottom one first

[flybobbie]

They only fit one way round.
But why do they fail?
Tested on a bench they work fine.
Is the control module detecting a coil fault.
This is why my Foxwell reader said there was a fault. How else could it know there is a fault?
Are coil open circuit resistor in relay breaking down changing resistance?

[flybobbie]

Is there not an easier to follow UK guide to replacing these?
Maybe including where to buy and what spec of part?
Just a thought...

Hi Craig,

I’ll link the ones I ordered off eBay here

https://www.ebay.co.uk/itm/202058464079 ... %3A2334524

As far as fitting them I can repost pictures when I have time but I found it very straightforward a 5 minute job

Remove boot carpet
Remove Foam
Reach down to the top relay & unclip
Reach down to the bottom relay & unclip

I made sure I made a note of how they had come out (which side was facing upwards)

Then refitted them, bottom one first

Cheaper from dealer £16.
But of course takes petrol money to drive to dealer.
Or https://www.bmwpartsonline.co.uk/Samon- ... 2631742690

[RobbiZ4]

Is there not an easier to follow UK guide to replacing these?
Maybe including where to buy and what spec of part?
Just a thought...

What should be easier than a BMW part number and a photo? Should I settle over to UK as resident and post it once more?

[RobbiZ4]

But why do they fail?
Tested on a bench they work fine.

Just read the basics in my linked thread on ZRoadster or even Spoolstreet. It's well explained.

It's NOT a simple fail of a relay. It's experience and the result of investigating lot's of destroyed hydraulic pumps.

At least, it's a welded relay contact, that can't be opened anymore. This will drive the pumps motor continously until it dies due to overheating.

[enuff_zed]

Should I settle over to UK as resident and post it once more?

Yes please!
Somewhere in the middle of East Anglia would be great.

[Zed Baron]

Cheaper from dealer £16.
But of course takes petrol money to drive to dealer.
Or https://www.bmwpartsonline.co.uk/Samon- ... 2631742690

If you live miles away from a BMW dealer they will post them out to you for £2, personally I would prefer to buy these from a dealer than Ebay and RobbiZ4 yes please relocate to the UK, Im sure we could keep you busy especially as the E89 gets older!

[RobbiZ4]

Well, I just read about a special letter to all EU citizens living in UK. Seems to be a very funny situation at the moment.

[enuff_zed]

Well, I just read about a special letter to all EU citizens living in UK. Seems to be a very funny situation at the moment.

Don't worry! I'll adopt you.

[RobbiZ4]

Well, I just read about a special letter to all EU citizens living in UK. Seems to be a very funny situation at the moment.

Don't worry! I'll adopt you.

Puuh, you saved my life.

[craigdm]

IMG_20210903_133727.jpg (122.95 KiB) Viewed 690 times

The relay change was a very easy job, removed some dated 1411 which suggests they had been changed at some point (14 reg car). Then I saw that the control box was marked 'approved'. Does that mean it's been replaced?

[RobbiZ4]

..., removed some dated 1411 which suggests they had been changed at some point (14 reg car). Then I saw that the control box was marked 'approved'. Does that mean it's been replaced?

Your hydraulic pump as well as the old relays are build in 2014 (14/week18 & 14/week11). All parts were built in at the production line, nothing has been replaced before.

[jenniferlouise]

I’ve just discovered this thread… our car is 2010. Don’t have an issue but don’t want one either! So going to place an order and get them swapped out as preventative maintenance. Thanks guys. A

Update: ordered this morning with Soper BMW Lincoln. They still offer Z4 Forum discount and cost me £30.46 the pair. Part number is same : 12 63 1742 690.
A Little January preventative maintenance: I read elsewhere in this thread not to use screwdrivers! I just need to find the black clip and slide out the assembly to easier access the relays….

[RobbiZ4]

I just need to find the black clip and slide out the assembly to easier access the relays….

Alle details can be found in the following thread:

E89: Retractable Hardtop (roof) Maintenance (and additional) tasks
viewtopic.php?t=130932

...not to use screwdrivers!

Absolutely correct!

[Argyll Andy]

I’ve just discovered this thread… our car is 2010. Don’t have an issue but don’t want one either! So going to place an order and get them swapped out as preventative maintenance. Thanks guys. A

Update: ordered this morning with Soper BMW Lincoln. They still offer Z4 Forum discount and cost me £30.46 the pair. Part number is same : 12 63 1742 690.
A Little January preventative maintenance: I read elsewhere in this thread not to use screwdrivers! I just need to find the black clip and slide out the assembly to easier access the relays….

Here you go jenniferlouise,