3 amigos plus added elecrical fault!

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LeonardTD5

Member
Posts
13
Location
UK
Hi all, Ive been reading the heaps of post relating to the 3 amigos on here.
I have had the 3 amigo issue happening for the last 2 years, every now and then the lights would come on (along with the beeping), I would turn off the ignition and then they would be gone, for a while.
Now...these 3 amigos have been coming on very regular over the last 3 weeks, until about a week ago when they would come on every trip I did.
This morning the wife took the boys to school, everything fine......I jumped in it a hour later and 2 mins down the road, the 3 amigos lit, 5 seconds after the stereo went cut out, the temp and fuel gauges dropped to nothing, and the beeps which happen when the 3 amigos usually come on, kept going off all the time.
I pulled over to the side of the road, switched off the engine, went to restart and it would ignite the starter then cutoff, then instantly reignite the starter then off,,,,this kept doing this in a repeated pattern.
I left the car where it was, came home, got online to checked faults and to try and get diagnosis, and it was then I found the common fault of the 3 lights were called 3 amigos!
I charged the battery, cleaned the battery terminals, played (wiggled) the o/s/r abs sensor, checked around fuse boxes including multiblock connections (best I could), and checked wires under the seats. The negative terminal had a little white corrsion, but not enough to cause trouble, and couldnt find no obvious faults apart from a 40amp fuse in the engine bay fuse box had blown (renewed with 35amp).
All seemed fine when I started it up again after 15mins of charging with the battery charger, took it out for a long drive....all ok, no lights, no problems.

Took it out after dinner this evening and 2 miles away from leaving, the 3 amigos came on.....5 seconds after the stereo goes off, dash lights go dim, beeping starts to happen! I notice the headlights are dim also. I take the long way round to return home and the battery went flat (while engine running) really quickly, to the point where it cut the engine out and wouldnt even provide enough juice for the hazards to work.

I parked it up, walked home and returned 30mins later with a friend to tow it back home, when I got to it the hazards were on (working), I towed it back home and when I turned the hazards off, the switch turned off but the hazards kept working. To be able to lock the car, I lifted the bonnet, locked the doors on the keyfob, diconnect the battery, and drop the bonnet.

Okay......any ideas please, I have some auto engineering knowledge, but this seems to be one where its time to ask a friend........the friendship of LandyZone :)

Jason
 
Welcome to the forum!
And welcome to the weird and wonderful world of the three amigos!
This is too complicated for me, I am too old to understand all the modern eletrickery on landies after disco 1s, more or less. though I have got a TD5.
Don't worry, far more knowledgeable peeps will be on soon to help you.
Best of luck!:)
 
Welcome to the forum!
And welcome to the weird and wonderful world of the three amigos!
This is too complicated for me, I am too old to understand all the modern eletrickery on landies after disco 1s, more or less. though I have got a TD5.
Don't worry, far more knowledgeable peeps will be on soon to help you.
Best of luck!:)
Thanks Stanleysteamer :)
 
Hi, first of all charge the battery, start the engine and measure voltage on the battery with engine running cos at first sight seems like alternator failure beside an interior fusebox issue... the 3 amigos can be coincidental or result of dropping voltage as the SLABS ECU will notice that first... is the vehicle on air suspension or coils?
 
Hi, first of all charge the battery, start the engine and measure voltage on the battery with engine running cos at first sight seems like alternator failure beside an interior fusebox issue... the 3 amigos can be coincidental or result of dropping voltage as the SLABS ECU will notice that first... is the vehicle on air suspension or coils?
Thanks. Its on coils with self leveling hydraulic system. I was thinking it was a separate issue and maybe the alternator or earth. Tomorrow I was planning on charging bat and doing a charge check, also check terminals etc, and plug in my solus scanner (its abit old and not up to date, but might still be able to clear codes etc...)
Thanks for the reply, I will update the thread with my findings tomorrow :)
 
Hi, first of all charge the battery, start the engine and measure voltage on the battery with engine running cos at first sight seems like alternator failure beside an interior fusebox issue... the 3 amigos can be coincidental or result of dropping voltage as the SLABS ECU will notice that first... is the vehicle on air suspension or coils?
Charged the battery to full charge......started him up (no amigos!).........test for charge = Nothing, no charge at all!
If the weather better tomorrow, I will get under and have a look at the alternator connections/wires etc...
Looks like I might need a new alternator........before I even consider attacking the amigos!
(I think your assessment of the dropping voltage triggering the amigo definitely right)
Thanks, will keep the thread posted if alternator needed and fix, also the continual process of sorting the amigo issue :)
 
Charged the battery to full charge......started him up (no amigos!).........test for charge = Nothing, no charge at all!
If the weather better tomorrow, I will get under and have a look at the alternator connections/wires etc...
Looks like I might need a new alternator........before I even consider attacking the amigos!
(I think your assessment of the dropping voltage triggering the amigo definitely right)
Thanks, will keep the thread posted if alternator needed and fix, also the continual process of sorting the amigo issue :)
We've been here before with the "rebuild the alternator or replace with new" argument.
Just saying as it is cheaper and I have never had a problem with it. Much you can do yourself and I am no auto-electrician! Or not much of one!
 
We've been here before with the "rebuild the alternator or replace with new" argument.
Just saying as it is cheaper and I have never had a problem with it. Much you can do yourself and I am no auto-electrician! Or not much of one!
If I had a workshop or even a garden shed to use at the moment I would consider it, and due to needing the vehicle for everyday use a replacement may not be the cheapest solution, but it would be the easiest and the quickest for me at this time.
 
Charged the battery to full charge......started him up (no amigos!).........test for charge = Nothing, no charge at all!
If the weather better tomorrow, I will get under and have a look at the alternator connections/wires etc...
Looks like I might need a new alternator........before I even consider attacking the amigos!
(I think your assessment of the dropping voltage triggering the amigo definitely right)
Thanks, will keep the thread posted if alternator needed and fix, also the continual process of sorting the amigo issue :)
You might be lucky to escape from problems with a new alternator cos if it was dead even the flashing hazards can be the result of dropped voltage as if the main relay opens is like when the inertia switch is tripped which brings on the hazards.
 
You might be lucky to escape from problems with a new alternator cos if it was dead even the flashing hazards can be the result of dropped voltage as if the main relay opens is like when the inertia switch is tripped which brings on the hazards.
When the engine died and I pushed it to the side of the road, I pushed the hazard switch on but not enough juice to turn them on, by the time I got back a little more juice became available it did switch the hazards on. It was when I got back home from towing it, the hazards would not switch off, which is probably because I used what ever juice was left putting side lights on to tow it!
I sorted another alternator today so hopefully fit it tomorrow (weather being kind)
 
Ok, fitted the alternator....charging around 14V, so all ok on that front.
Been for a very long drive, even over rougher terrain, no amigos!
Gonna see how it goes on the amigo front, if just showing up as before this charging issue, then i'll hang on for better weather before investigating further.
Fingers crossed that the frequent visit was just from the lack of charge from the alternator :)
 
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