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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Discuss problems you have had or are having with your Z4
Mr_E85Bim
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Mr_E85Bim » Tue Jun 21, 2022 11:09 pm

Ahhh it seems to be one thing after another with this car :headbang:

Driving down the street all fine and then BOOM four yellow lights appear after a beep. The DSC ABS TPS and Handbrake, all in yellow.

I found other posts on here that seem to be a few years old. I don't feel like any of them got to the bottom of it. One referred to changing wheel sizes. I did the same a couple of weeks ago. Perhaps this is the cause?

If anyone knows the answers, it would be greatly appreciated.

Thanks
Last edited by Mr_E85Bim on Wed Jun 22, 2022 8:03 am, edited 1 time in total.

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Smartbear
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Smartbear » Tue Jun 21, 2022 11:11 pm

Mr_E85Bim wrote: Tue Jun 21, 2022 11:09 pm Ahhh it seems to be one thing after another with this car :headbang:

Driving down the street all find and then BOOM four yellow lights appear after a beep. The DSC ABS TBPS and Handbrake, all in yellow.

I found other posts on here that seem to be a few years old. I don't feel like any of them got to the bottom of it. One referred to changing wheel sizes. I did the same a couple of weeks ago. Perhaps this is the cause?

If anyone knows the answers, it would be greatly appreciated.

Thanks
Have you scanned the car?
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Special Kay
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Special Kay » Tue Jun 21, 2022 11:13 pm

try reading the codes, if you have a code reader, then you'll have something of a basis to work from :thumbsup:

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SonnyA85
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by SonnyA85 » Tue Jun 21, 2022 11:33 pm

To do with abs sensors, reluctor rings and possibly the yaw sensor.

If you are handy get the abs sensors cleaned. Then the reluctor rings.

They may need replacing rather than cleaning. At least when you clean them you can see what nick they are in.

Yaw sensor is under the passenger seat. It can get corroded from water ingress thanks to flooding from the door membrane or rear drain where the motor is.

A scanner may help tell you which abs sensor is causing the fault. That way you can just clean or replace that one along with its reluctor ring

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enuff_zed
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by enuff_zed » Wed Jun 22, 2022 7:58 am

When I had all four it was an ABS sensor.
When the yaw sensor went I didn't get the tyre pressure light, just the other three.
The yaw sensor is under the drivers seat in actual fact.

As already mentioned, a decent scanner will lead you to the right corner.
If the speedo is working you can ule out NSR.

As a thought, were any of your old wheels stuck on and needed a hammering?
That did for one of my ABS sensors when I had to hammer a disc off.
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Jameszy
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Jameszy » Wed Jun 22, 2022 8:15 am

As others have said, best thing to do is plug a scanner in. Like one of these:

https://www.amazon.co.uk/Scanner-Airbag ... B00KL4H2G0

Where abouts are you based?

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Chii
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Chii » Wed Jun 22, 2022 8:56 am

Where abouts are you Bim?
I'm sure many members have carly that live near by - That said I am totally assuming carly would pick this code up?

I think I had a similar light array once, it turned out to be my ABS pump. I got it reconditioned in the end. I can't quite remember how much it cost, I want to swing at £800 ~ £1300 I think a new pump was nearer ~£1600
Sorry my memory is terrible!

The ABS pump went in the Alps, so just had to suck it up and be careful for the rest of the trip! Luckily it was the summer, so roads were dry!
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Mr_E85Bim
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Mr_E85Bim » Thu Jun 23, 2022 8:32 pm

Thanks gents!

Appreciate the guidance as always.

I do not have a scanner. I am based in Central London, south of Rotherhithe tunnel. Do let me know if you're local plss

I will research where the abs sensor is and give it an inspection/clean. Hopefully that will do the trick. I may have knocked it while I was changing the wheels

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enuff_zed
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by enuff_zed » Thu Jun 23, 2022 8:38 pm

Mr_E85Bim wrote: Thu Jun 23, 2022 8:32 pm Thanks gents!

Appreciate the guidance as always.

I do not have a scanner. I am based in Central London, south of Rotherhithe tunnel. Do let me know if you're local plss

I will research where the abs sensor is and give it an inspection/clean. Hopefully that will do the trick. I may have knocked it while I was changing the wheels
One on each wheel. Follow the cable from the inner side of the wheel arch and you'll see where it plugs into a hole in the hub, where it counts the amount of teeth/gaps on the reluctor ring that pass it in a certain time span.
Apart from making sure there's no crud on it, the simplest answer is to scan and see if any of the four are giving a fault code.
Sorry, bit far from Norfolk or I'd happily help out.
E89 20i SDrive M Sport - VO - mine
E85 2.5i - Sterling Grey - Vall's
E85 3.0i - Black Sapphire - Project Freeleeta
E85 2.5si - Black Sapphire - gone
E85 2.2i - Black Sapphire - gone

Mr_E85Bim
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Mr_E85Bim » Thu Jun 23, 2022 10:30 pm

Thanks EZ, you and the other are helping enough :thumbsup:

I will do as you described :thumbsup:

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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Mr Tidy » Thu Jun 23, 2022 11:01 pm

Just a thought but how old is your battery?

Dying batteries in BMWs throw up all sorts of random warning lights!

I got 3 of your 4 in my MC when the battery went flat last year then a TPMS one that wouldn't reset in my 3 Series a month ago that a new battery cured.
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Mr_E85Bim
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Mr_E85Bim » Thu Jun 23, 2022 11:21 pm

Thanks Tidy!

I should be popping down to Halfords tomorrow so I'll ask them to check it. Although, I did have them check it a couple of months ago when I was having problems with the alarm :headbang:

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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Rucky » Fri Jun 24, 2022 9:30 am

If you are going to keep your Z4 you really should invest in a code reader - it will save you lots of time, money and misinformation.
This is how the ABS system works. They are prone to faikure but you need to know which one. It could also be the ABS pump which will cost you a lot more to fix but this is a start if you dont know how these systems work :
https://www.pelicanparts.com/techarticl ... cement.htm
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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Rucky » Fri Jun 24, 2022 9:35 am

04 2.5i Titan silver - 1st Z4 now sold on
07 3.0si Silver Grey M Sport pak.
X5 and assorted motorbikes

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Please help!!! FOUR YELLOW LIGHTS on dashboard!

Post by Jameszy » Wed Jun 29, 2022 11:56 am

What is the point of asking for advice if you are going to ignore it in favour of heading to Halfords of all places?

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