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t o t a l m i n i . c o m
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Discussion Starter #1 (Edited)
hey,

im wondering if someone out there can help me as i am quite confused and worried!

I own a Feb 2002 mini cooper, I purchased the car as a private sale in January and am now having a few problems!

firstly I had a few problems that the windows werent dropping when the door was opened, which resulted in the car door not closing, I had to put the key in the ignition, open the windows and close it again, all was ok, except that the trip was back to 000 and the clock was set at 00:00, this has happened a few times recently, this has only happened a few times and just assumed there was a minor computer glitch etc..

Then last week I had a problem that I filled the car with petrol, drove 100 yards up the road, switched the car off for approx 1 minuite, went to switch the car on again and there was nothing! no power, lights, nothing! I tried this a few times, then opened the bonnet to check the battery, all was ok, closed the bonnet again and tried starting it and it was ok again!

later that day I was pulling out of a parking space on a busy road, then the power steering failed as well as the radio and lights dimmed for a split second i switched off the engine ,back on again, all was ok!

now today has worried me the most, as the power steering has failed at a mini show when i was reversing out of a space, it failed and also at traffic lights on the way home, this was the radio and lights again failing too! again this all reset back to 00:00

now ive checked the power steering threads and they mention the steering failure, but none of them mention the stereo and dash lights etc failing? and also the clicking sound from the dash?? Im wondering if it is the actual power steering or the main computer? or poss the battery?

my car is out of warranty and has 94,000 miles on it. im going to book it into a garage to have them check it over but before i do id like to see if this is a common problem?

if anyone can please Please PLEASE help me, that would be much appreciated!;)

Thanks!
Deano
 

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Assuming your battery output and connections are OK, random intermittent faults, especially on early 2001 and 2002 MINI's are often caused by the BC1 getting wet.
The BC1 (Body Control Unit) is in the drivers side (UK) footwell, it controls many electrical items and can send many things haywire if even a drip of water gets into its pcb connectors until it dries out. If you pull the footwell bonnet catch lever, hold it open & shine in a torch behind the trim panel you will see the top 2 multiway connectors to the BC1 or a black plastic cover. Early MINI's (pre 2003 approx) did not have the black plastic shield over the connectors to protect them from any small drips of water running down cable harness inside the windscreen pillar. Later cars do, my 2002 Mini only had a piece of clear plastic film draped over the connectors (a factory or dealer stop gap fix I guess) and was randomly locking / unlocking the central locking by itself after any rain / wet weather, washing the car, etc. I removed the inner sill plastic trim panel & fitted the later water shield cover (part no.61356942512 approx. £2) over the 2 top connector plugs. This cured all problems once the BC1 had dried out.
See Diagram Item 9
Some people have had success opening the BC1 and drying out gently pcb inside with a hairdryer.
(BMW dealers will of course only fit a new unit).
If this is the problem do not ignore as long term corrosion inside the BC1 means a new unit.....very expensive outside warranty.
(If the BC1 is replaced with a new or secondhand unit it would normally need to be re-programmed by a MINI dealer.).
 

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MINI inspiration
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i would try a new battery may solve your problems..

i had power steering itermittant, resetting of counter and shaking needles, and a new battery has cured all these oddities, car much happier!

hope it helps u :red:
 

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t o t a l m i n i . c o m
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Discussion Starter #4
thanks for the quick reply,

as you may have been aware, the heavy rains last saturday was the day that problems had started up again! since then the car has been doing this, now i got home today and was trying to get the plastic trim off bit it seems to be 'clipped' at the bottom, have you any idea how recommendations on how to get this trim off to inspect the BC1?

im going to spend tonight checking this up and will order the part tomorrow as i do not want this to get worse in the winter etc (which was when the window problem etc had started!)
 

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All you need to know for sill trim removal here :-
http://www.mini2.com/forum/interior-ice/129972-interior-sill-trim-removal-bc1.html

Trim is clipped on nylon /plastic fixings, remove rubber door seal and lever plastic trim away from sill with a large screwdriver and a piece of rag to protect paintwork.......they are tight but don't seem to snap off !
In the end I did not remove seat or seat belt mount and just levered away the front and side part of trim panel to allow enough access to dry connectors and fit the plastic water shield over the top BC1 connectors. As a temporary measure I used a plastic bag and tape until getting the correct part from my MINI dealer.
 

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t o t a l m i n i . c o m
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Discussion Starter #6
is the BC1 a small white unit further up above the panel or is it lwer down directly beside the bonnet catch lever?
 

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is the BC1 a small white unit further up above the panel or is it lwer down directly beside the bonnet catch lever?
The BC1 is lower down behind the bonnet catch lever with 2 multiway cable connectors in the top and 2 at the bottom (Green,black,natural & blue), early type units are metal alloy case and later are black plastic I think.
No..1 in this diagram
 

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t o t a l m i n i . c o m
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Discussion Starter #8
thanks for youre hep on this!

well i have opened and had a good look at the BC1 unit, mine is metal casing, i pulled the carpet back and checked all the leads, connections etc and found no evidence of water anywhere, but mine has no plastic cover over the two terminals?! i work on alarms etc so i have a few large bags of silica gel in my van which i have decided to wrap around the terminals, looms and th back of the BC1 unit to soak up any moisture that may be around the unit, but i didnt see any dampness? im hoping that they will sort the problem out!!? is there any other looms and connetions about that may be worth checking??
 

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It only takes a tiny drip of moisture inside a connector or inside the BC1 unit to short out tracks on the printed circuit board & create havoc, remember the MINI uses a modern computer bus network all around the car with the BC1 communicating with many other key modules of the cars electronic systems.
There was no visible moisture around or on my unprotected BC1 (March 2002 MINI) but after fitting the cover and then allowing it to dry out the problems started to disappear, within a few days for good.
As your 02 MINI also had no cover fitted I would say there is a good chance that fitting one will cure the problem (approx. £2 from BMW) if no serious corrosion has occured inside the BC1 or its connectors.
Let us know how you get on for future reference. :)
 

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t o t a l m i n i . c o m
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Discussion Starter #10
well so far a weekhas gone by since I looked at the BC1, I fitted silica packs around Ll the connections and looms at the unit, I also fitted the top cover aswell, and checked all connections at the battery and fuse box, so far all is working ok so I hope this has sorted out the problem! I am going on the Irish job run this weekend so I will pay close attention over that weekend and report back!!
 

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THE STICK
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OK the windows etc could be a BCU fault (this is located in the doors) Very expensive to have replaced, but usually the faults are caused by damp/water getting into the module so there can sometimes be an easy but slow process to fix it by drying the units out. This explains the intermittance of any fault related to BCU contolled bits of the car....possibly.

The PS loss is defo gonna be the pump on its way out. Before mine failed completley I had intermittant failures, usally while the steering went to full lock. Redo the ignition and it would often sort itself out. However it will finally give up the ghost....get it sorted. There are places doing recons, but also there are folks who get new units out of BMW for cheap or free if the cars not too old. Mine was and so ThinkMINI got me a deal with BMW for a pump with as much discount on it as possible. Prices for recon range from 150-250 quid. Prices for new units are 350+ (most of the time BMW charge more like 450)

One of the faults with the PS pumps is that the overworking of the pump can cause heat buildup and this can melt wiiring... this could in turn short things on the car or drain huge quantities of power on the car causing lights etc to dim.... worth checking this is not the problem, as if it is it has been known for it to cause fires!
 

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t o t a l m i n i . c o m
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Discussion Starter #12
If I was to take it to mini are they able to tell straight away if the pump is on its way out? Or do they have to play with of till it cuts out? Just I have driven 300 miles now and haven't had the problem at all since I dried the BC1 etc and installed the new cover, it was something I was thinking too but I have an 02 cooper with 92000 miles on of so I think it's well out of warranty and would be considered as old now?
 

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THE STICK
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Yep my S was 6 years and 70k and there was no way they would give me a freebie at BMW. However my local mini specialists used thier contacts to get me a great price on a new pump from Beemer.

Basically the dealers tend to fob you off a bit on this one until it fails... but its up to you your dealer might just go OK. Don't forget though they charge just to look at it! I'd get it looked at though by dealer or a good MINI specialist like ThinkMINI ... they know what to look and listen for in terms of the wiring loom and the PS pump
 

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t o t a l m i n i . c o m
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Discussion Starter #14
hey just thought id update this thread and let everyone know i got the problem sorted,

not long after this last post i had discovered that the problems had got worse and more frequent, lights and dash buzzing too, trip and clock going to 0.00. I also had to get 2 new tyres :rolleyes: so while i was there i got the battery tested, turns out it was the original 6 year old one and it was faulty, so changed it over, and so far, (fingers crossed) there have been no problems! car has been running fine!;)

just thought id let you all know!:) and thanks for youre help!:cool:
 

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MINI inspiration
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hey just thought id update this thread and let everyone know i got the problem sorted,

not long after this last post i had discovered that the problems had got worse and more frequent, lights and dash buzzing too, trip and clock going to 0.00. I also had to get 2 new tyres :rolleyes: so while i was there i got the battery tested, turns out it was the original 6 year old one and it was faulty, so changed it over, and so far, (fingers crossed) there have been no problems! car has been running fine!;)

just thought id let you all know!:) and thanks for youre help!:cool:
yeh... i suggested a new battery back in August, how have you managed until now :) ?!

ive never had any of the oddities returned since i got the new battery, so im sure you will ok too.
 

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t o t a l m i n i . c o m
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Discussion Starter #16
yeh... i suggested a new battery back in August, how have you managed until now :) ?!

ive never had any of the oddities returned since i got the new battery, so im sure you will ok too.
just looked at that there now! crazy! :rolleyes:well thanks for youre help on that! you were spot on!

when i went to my mechannic he told me there was no way it could be the battery, he was going down the new PS pump, or New ignition switch, or failing that new BC1 unit, :eek: would have spent a fortune instead of checking something simple! think its time to look for a better mechannic!:eek::(
 
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