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Joshy89

Glow plugs again...

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I changed my glow plug controller and plugs 4 months ago all was well it fixed my lumpy idle dpf issue etc. Yesterday morning I got a lumpy idle again so I checked it out with my scanner lo and behold it’s the plugs once again! All 6 glow plug activation, question is am I just unfortunate and the controller has blown or is there an underlying issue which is frying it? Would love any input from anyone with a similar experience. I should mention controller was bought from bmw. 

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The supply wire from alternator to glow module (Nr.1) is prone to fail at the module end. The internal contact in the plug housing has poor contact and can even melt due to higher resistance. This will cause fault code from all glow plugs. So I would renew that wire first.

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Beru ones fail in a year or less. Changed mine 3 times in 5 years, its failed again. I have ordered a Hitachi one from Autodoc, almost the same price. Going to replace it soon.

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Yes I was going to say was it an OEM controller from BMW? I read lots of reports of Beru ones failing quickly so I spent a bit more on genuine, mine is still going strong after a year.

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57 minutes ago, edd_jedi said:

Yes I was going to say was it an OEM controller from BMW? I read lots of reports of Beru ones failing quickly so I spent a bit more on genuine, mine is still going strong after a year.

Spent a bit more? The OEM part for M57 engine is made by Beru.

744347as-960.jpg

 For my N47 I think the original is Beru and the OEM replacement part has been superseded by Bosch in since 2015.

 

Keliuss

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59 minutes ago, edd_jedi said:

Yes I was going to say was it an OEM controller from BMW? I read lots of reports of Beru ones failing quickly so I spent a bit more on genuine, mine is still going strong after a year.

BMW genuine one is manufactured by beru... at least the one I replaced on my car was BMW badged but with beru written on it... I think it's down to where it is mounted just cooks it but that's a guess...

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Just now, keliuss said:

Spent a bit more? The OEM part for M57 engine is made by Beru.

744347as-960.jpg

 For my N47 I think the original is Beru and the OEM replacement part has been superseded by Bosch in since 2015.

 

Keliuss

Got there just before me... mine is from an n47

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Sorry you haven't understood what I meant - yes Beru make the OEM ones, but the £30 Beru modules that ECP etc sell are not the same as the £80 Beru ones BMW sell. I found loads of posts saying 'pattern' Beru ones failed quickly, eg here:

 

 

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2 hours ago, edd_jedi said:

the £30 Beru modules that ECP etc sell are not the same as the £80 Beru ones BMW sell

 

I couldn't agree more. One has a BMW sticker and is £50 more expensive. 

 

"Pattern" parts generally refers to parts made by anyone except the original manufacturer. I hear what you're saying, but find it hard to believe they are not the exact same part from the same production line, with the logo etching changed. What I can believe is BMW sprinkling some magic pixie dust on them and upping the price.

 

By coincidence I recently ordered, of all things, from autodoc, for £43, yes, you've guessed it, a Beru glow plug controller. I hope I'm not going to have to eat my hat :rolleyes:

 

Keliuss

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12 minutes ago, edd_jedi said:

Agreed, but I found plenty of posts from people recommending against the cheaper ones.

 

But was the long time results also reported after changing the original glow module? In many cases these problems are caused by the voltage supply to glow module and they usually manifest quite shortly after replacing the module.

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On 02/04/2019 at 18:26, keliuss said:

I hear what you're saying, but find it hard to believe they are not the exact same part from the same production line, with the logo etching changed.

I once had to buy a CV joint for a Saab, and dealer price was eye-watering. When I sourced one from a Saab spares specialist who assured me it was genuine, the word 'Saab' had been incompletely ground off the new part. 

Similarly when I was looking for a new battery for my BMW bike the battery specialist recommended the 'Deta' brand as 'they make them for BMW'. All the moulding marks on the battery case were absolutely identical. Must be common practice I suppose. 

Edited by pidgeonpost

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10 hours ago, pidgeonpost said:

I once had to buy a CV joint for a Saab, and dealer price was eye-watering. When I sourced one from a Saab spares specialist who assured me it was genuine, the word 'Saab' had been incompletely ground off the new part. 

Similarly when I was looking for a new battery for my BMW bike the battery specialist recommended the 'Deta' brand as 'they make them for BMW'. All the moulding marks on the battery case were absolutely identical. Must be common practice I suppose. 

 

I have seen it myself on an EGR thermostat for the M47 engine. I was not concerned about the OEM brand and just bought a cheap replacement. On removal of the old and comparing them it was clear the cheapo part had the BMW logo removed with a grinder, and the parts were identical other than that, including the Behr (I think) logo.

 

I work in the injection moulding industry and the cost of tooling for these parts is huge, so it makes sense to use the same tooling and have an operator manually grind off the logo of each part after a production run.

If the type of plastic is compatible with laser etching, as in the Beru relay above, the process becomes even simpler. Just load a different print file.

 

Keliuss

Edited by keliuss

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When I get around to it I'm cutting open the original BMW one and fixing the blown wire so I have a spare ready to go.

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Hi @GoNz0, I've got GPs 1 & 2 failed, changed all 4 and still have GPs 1 & 2 errors. Assuming my new controller resolves the issues what am I looking for inside the old one if I cut it open?

 

Keliuss

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22 minutes ago, keliuss said:

Hi @GoNz0, I've got GPs 1 & 2 failed, changed all 4 and still have GPs 1 & 2 errors. Assuming my new controller resolves the issues what am I looking for inside the old one if I cut it open?

 

Those thin aluminium wires going from connector pins to circuit board. They are originally ultrasonic welded. The pads are also aluminium which makes them more difficult to solder. You'll need solder like alu-sol and plenty of heat.

 

Similar connections break in for example ABS modules and electric turbo actuators. As these glow modules are relatively cheap I don't see much point trying to repair them other than for own fun if you happen to like it.

 

 

Edited by Clavurion

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15 minutes ago, Clavurion said:

Those thin aluminium wires going from connector pins to circuit board. They are originally ultrasonic welded. The pads are also aluminium which makes them more difficult to solder. You'll need solder like alu-sol and plenty of heat.

 

Muchas gracias @Clavurion, I'll definitely open it up if swapping out resolves issues. When something fails I like to find out specifically what failed :)

 

Keliuss

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On 02/04/2019 at 09:35, San75 said:

Beru ones fail in a year or less. Changed mine 3 times in 5 years, its failed again. I have ordered a Hitachi one from Autodoc, almost the same price. Going to replace it soon.

Yeah I think mine has failed less than two month. I’ve not bothered with it to be honest, I was under the impression that the dpf wouldn’t regen with the codes showing but it must because back pressures have been 2/3 when I’ve checked. I can live with the lumpy idle for 10 seconds every morning. Has anyone tried taking their failed one back to bmw for a refund or exchange or is it to much of a ball ache? 

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40 minutes ago, Joshy89 said:

Yeah I think mine has failed less than two month. I’ve not bothered with it to be honest, I was under the impression that the dpf wouldn’t regen with the codes showing but it must because back pressures have been 2/3 when I’ve checked. I can live with the lumpy idle for 10 seconds every morning. Has anyone tried taking their failed one back to bmw for a refund or exchange or is it to much of a ball ache? 

If a BMW part under warranty fails you have to take the car in where they diagnose and replace the part, just be sure it is faulty as they issue the £150 threat if it isn't that.

It doesn't matter if you fitted the part either but sometimes they want the reg or vin on the invoice but most places (Cotswold or Rybrook) are more than happy to issue a new invoice with said reg on.

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It it died quickly and was a Beru then your car might be killing them. Over voltage is what kills the glow plug controllers and that can happen if your alternator regulator is on its way out or the alternator brushes are very worn. Jump starting your car from another car also causes voltage spikes that kill the glow plug controller.

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