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Discussion Starter #1
Hi

Took our 2015 Mini into dealer today as display has been showing a headlamp vertical control failure.

Thought this would be a simple fix, but dealer called to say that the fault code had been caused by water ingress into the wiring and we need a new wiring loom! Looking into this it will be a major operation involving removal of dash/interior/etc.

Apparently they have seen this fault in other vehicles of a similar age and Mini have now adjusted design of the wiring. Has anyone else experienced anything like this?

Obviously we are very concerned that the car will be the same having had such major work and been taken apart and put back together again... Thankfully its still under warranty as apparently this is a very expensive repair.

Any thoughts/advice gratefully received.

J
 

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Hi

Took our 2015 Mini into dealer today as display has been showing a headlamp vertical control failure.

Thought this would be a simple fix, but dealer called to say that the fault code had been caused by water ingress into the wiring and we need a new wiring loom! Looking into this it will be a major operation involving removal of dash/interior/etc.

Apparently they have seen this fault in other vehicles of a similar age and Mini have now adjusted design of the wiring. Has anyone else experienced anything like this?

Obviously we are very concerned that the car will be the same having had such major work and been taken apart and put back together again... Thankfully its still under warranty as apparently this is a very expensive repair.

Any thoughts/advice gratefully received.

J
peugeot's get it on the engine harness with them it drips water into the under bonnet bcm, renault have insulation that breaks down with age, your car is fairly new so prob wont find many same ones on line yet as bmw/mini should be fixing it under warranty and like to keep stuff like that to them selves not good for car sales i guess.. reality is there are hundreds of thousands of these cars on the road and few will suffer random problems,,
 

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Discussion Starter #4
It first appeared a couple of weeks ago and the car itself has been running perfectly.
Dealer said nothing to do with headlamp issue and that fault was traced to water entering the wiring and triggering an error message. Repair is apparently to replace the whole loom! He was going to investigate how the ingress had happened, but apparently this is not the first time they have come across this.
 

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It first appeared a couple of weeks ago and the car itself has been running perfectly.
Dealer said nothing to do with headlamp issue and that fault was traced to water entering the wiring and triggering an error message. Repair is apparently to replace the whole loom! He was going to investigate how the ingress had happened, but apparently this is not the first time they have come across this.
water will effect the resistance values the local multiplex network runs on in a modern car electrics ie monitoring systems it reads very small resistance changes to detect a bulb out or something not working as should below link if want chapter and verse on it
Multiplexing definition Electronic control, automation and CAN bus multiplexing, optimized electrical systems for automotive, working equipments, speciality vehicles and transportation sector
 

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Hi

Hope someone can help me with some advice. Mini One has a similar problem needs a new wiring loom due to water damage etc, confirmed by BMW as a Manufacturing fault but as my 4 year old mini warranty has just run out, they want me to pay 20% of the labour costs which is about £1000.

Is this fair? Surely a design fault should be fixed 100% by BMW? They’ve agreed to fix everything else so seems strange I need to pay 20%?

Ive been told that BMW might try this and recoup some of the loss?

Thanks guys!
 

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Hi, I've had the EXACT same issue with my 2016 Mini Cooper. Vertical headlight aim failure, took it to my normal garage, thinking it would be a simple fix, turns out the washer fluid pipe has been leaking on the wiring loom for years (he thinks it must've been like that since new, it's definitely not a new thing). All the wires inside that area are black, and 3x the size they should be. When he cut them, the smell of washer fluid was overpowering so he knew immediately what it was. Took it to Mini, they've told me they need to confirm the problem (£110 an hour for diagnosis might I add), then 'apply' for a good will gesture from Mini head office because it's not within warranty. The car is 4 years old, I've owned it since brand new and it's always been serviced by Mini. I'm yet to find out what Mini say, but i'm betting my mortgage on the fact they'll say it's a new problem and it's my fault. Completely contrary to what my regular mechanic said. £1400 for a whole new loom. Cannot believe it. Not a lot I can do about it. I'm glad someone else has had this exact issue so it's not just one case at least. Hopefully it's a known fault and they'll rectify the issue without it costing me £1400. But I highly doubt it.
 

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Hi, I've had the EXACT same issue with my 2016 Mini Cooper. Vertical headlight aim failure, took it to my normal garage, thinking it would be a simple fix, turns out the washer fluid pipe has been leaking on the wiring loom for years (he thinks it must've been like that since new, it's definitely not a new thing). All the wires inside that area are black, and 3x the size they should be. When he cut them, the smell of washer fluid was overpowering so he knew immediately what it was. Took it to Mini, they've told me they need to confirm the problem (£110 an hour for diagnosis might I add), then 'apply' for a good will gesture from Mini head office because it's not within warranty. The car is 4 years old, I've owned it since brand new and it's always been serviced by Mini. I'm yet to find out what Mini say, but i'm betting my mortgage on the fact they'll say it's a new problem and it's my fault. Completely contrary to what my regular mechanic said. £1400 for a whole new loom. Cannot believe it. Not a lot I can do about it. I'm glad someone else has had this exact issue so it's not just one case at least. Hopefully it's a known fault and they'll rectify the issue without it costing me £1400. But I highly doubt it.
 

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Hi Emily, we have also had a very similar problem with our 2015 Min Cooper. In this case it was the Parking Distance Control (bumper radar) that suddenly became intermittent, showing a fault and then working again in quick succession. After a few days of that it failed totally and showed the message PDC failure - External Interference. To cut to the chase, after having to approve circa £900 of investigation work we've been told by the Mini Dealer, (Berry Chiswick) that it needs a new wiring loom costing circa £3500 because most of the interior has to be stripped out to fit it. The car is immaculate by the way, fully serviced by Mini and has done only 17,000 miles and has not been involved in any bumps of any nature. The dealer applied to BMW who have offered to pay 100% of the part costs and 80% of the work, because it's out of warranty. So our total total bill will be circa £1300. To say we are angry is an understatement. Surely it is reasonable to assume that such a fundamental part of the car should last longer than 5 years but BMW will not accept that it's a manufacturing fault so we're stuck with having to pay. Speaking to BMW was like talking to a speak your weight machine; they were not willing to listen to any appeal and said they weren't going to change the result of the "process" which resulted in their "good will" offer. Well our response is that the car is coming up for renewal and we will certainly not be buying a Mini or BMW. There is clearly a manufacturing fault here and they should own up to it.

Update 19 March:
After a great deal of complaining and emails BMW did provide a further £300 towards the cost, reducing our overall bill for this to £1000. We feel it’s still a lot to be asked to pay though for something which you would not expect to fail.
 

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Just been told of the same problem: on a 2015 Mini One:

Took in for faults that had developed over a few months, showing as:
  • erratic wiper operation - including wiperss running when ignition off
  • "pedestrian system fault"
  • "parking light fault"
  • "headlamp control failure"
Dealer says water in headlamp wiring harness and needs part of the wiring harness replaced - at enormous cost.

If this is a recognised design fault and the car has been serviced through the Mini dealership surely Mini have a major responsibility?

Has anyone had any further 'joy' from Mini?
 

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Just been told of the same problem: on a 2015 Mini One:

Took in for faults that had developed over a few months, showing as:
  • erratic wiper operation - including wiperss running when ignition off
  • "pedestrian system fault"
  • "parking light fault"
  • "headlamp control failure"
Dealer says water in headlamp wiring harness and needs part of the wiring harness replaced - at enormous cost.

If this is a recognised design fault and the car has been serviced through the Mini dealership surely Mini have a major responsibility?

Has anyone had any further 'joy' from Mini?
hmmm a bit like the endless timing chain issues they get, that bmw say no never get any in workshops to repair so not a problem,, the endless bcm faults same again, one day they will run out of people who believe anything they say and avoid buying them,, i know most in the trade now avoid the diesels on many levels,, even the petrol stuff have oil leaks and timing chains that fail early bmw say its juts people on forums who know nothing etc,, really does seem that most EU car makers all use same book on never admit to any issues etc, when out of warranty
 

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Update: A success story. Wiring harness replaced at Mini UK expense. Service Centre only charged for investigation.
Thanks for all the info on this discussion thread. I believe the range of similar problems and the reported customer experience led to our successful result: all in a matter of days!??
PS the work took a full 3 days.
 

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Old thread.
I have a 2015 Mini Cooper S. About 3 months ago, I started getting the "headlight vertical alignment failure", bit odd I thought since I only had halogen, but the dial stopped working intermittently. I used a diagnostic tool reset it but it came back again a few days later.
A week later I got the "Pedestrian Protection System fault", again reset it would come back.
Sat in lockdown for a couple of months unable to book into any garage.
Anyway booked it in for today to local Mini garage, and then last weekend a "Sidelight failure". Noticed when signallying right, perhaps 50% of the time it would blink quickly as if a bulb had gone, however all bulbs seem to work fine!

So Mini did the final 5 year service item on TLC (Brake fluid change), and looked at the faults (for £90).
They called me up saying it needed a new wiring loom at the cost of £2900! It seems it was damaged by water ingress.
However they had already contacted BMW who would provide goodwill and brought the cost to me down to £790. Given they had already asked for goodwill, I assumed it must have been a common problem. I asked them if there was more goodwill available but unfortunately not since the car is almost 2 years out of warranty. I've gone ahead and should get the car back by the end of the week.
They have assured me that because I am contributing the to cost (and not all goodwill payment), that this work and parts will be guaranteed for a further 2 years, so something to consider. They have also said that the cause of water ingress will also be rectified.

Given it's seems a common fault, does anyone know if the water ingress is from a consistent point? - Just wondering where abouts I should be keeping a close eye on to ensure I'm not stung for this again in the future!!

If I'd realised how much these repairs bills were going to be as a proportion of the cost of the car, I might have thought twice before buying one! Just out of interest has anyone had this problem fixed at an independent, and if so did it work out a lot cheaper?
 

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I have just had the same problem with my 65 plate mini. Fault came up with pedestrian safety system after weeks in garage as kept coming back on they found that water had been leaking onto the wiring loom and I have now had to have a new one fitted.
Have tried complaining to mini but getting no response from them at all!! Does anyone have any tips or had any joy getting something back from mini??
 

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Emck: Did you take it into a main dealership? Unfortunately if you've already had the work done and paid it might be harder to claw back. How much did they charge?
 

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Due to lockdown main dealer in area has been closed so had to take it to local garage who had been contacting a mini parts specialist from the dealership to order the right parts. They only charged just over £1000 due to the mess around of it being in there for several weeks trying to find issue but it was money nobody really has with all this lockdown going on.
Mini have been useless we have tried contacting several times and they say will contact us back but don't get any response
 

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Due to lockdown main dealer in area has been closed so had to take it to local garage who had been contacting a mini parts specialist from the dealership to order the right parts. They only charged just over £1000 due to the mess around of it being in there for several weeks trying to find issue but it was money nobody really has with all this lockdown going on.
Mini have been useless we have tried contacting several times and they say will contact us back but don't get any response
Yes sounds very unfortunate, because an independent garage already has all the money, and guessing BMW/Mini is probably only incentivised to contribute towards repairs which help prop up their franchised dealerships... :(

I was fortunate enough that I could wait the 2+ months(!) until the dealerships opened again - but fully appreciate you may not have had that luxury.
For the record, when I picked up the car and drove off last Friday, warning lights for cruise control failure and stability control failure came on - so car was driven straight back to the dealership, where it's now being worked on again! - I sense it could work out as being in the garage for about 3 weeks. The amount of labour being spent on this repair, I can imagine why they charge so much normally otherwise!
 
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