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Discussion Starter #1
2006 Renault Clio III 1.4 16V BR0A.

A bit of history in case anything here is relevant:
The car recently failed to start, error P0300 Powertrain Random/Multiple Cylinder Misfire Detected, new crank sensor fitted, it worked again.
Car has had "Braking Fault" and ABS light on dash, DF017 Tachometric Index Programming (Circumference of the wheels?) and DF001 Power supply to your ABS module. This braking issue hasn't yet been resolved.

Now this...

As you can see, rapidly flashing immobiliser light. This indicated the UHC doesn't recognise the key.
ALSO NOTE, turning the key to crank the engine does NOTHING at all. In other videos of immobiliser faults (on the Clio II though), the starter motor still tries to start the engine. Is it different on the Clio III, or does it indicate a different issue?

Auto locksmith has been called out (I wasn't present), but has said that the key is fine (not sure how this was determined), he said it's probably the ECU.

From all the reading about immobiliser issues, I don't think ECU, I think UCH (could this be what the locksmith meant but he was just using general laymans terms?).

How do you determine whether or not it's the UCH, is it just a case of playing 'parts bingo'?
Is the UCH specific to the engine type?
Is the UCH specific to any particular options within the car?
If replacing the UCH, is a new set of keys required?
If replacing the UCH, is a matching ECU required?
(I ask because on eBay most UCH's are bundled with ECU & keys)

*I remember vaguely that the guy it was bought from said he replaced the ECU (I think this was because he'd acquired it with no keys, and he may have been talking about the UCH though) and said that he'd tried different ECU's that didn't work, he said that was because the ECU had to match the options on the car.
 

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Discussion Starter #2
Re: Clio III 1.4 16V immobiliser issue

Anyone?

I'm trying to figure out which parts would be needed due to them being coded together.

Engine ECU + UCH definitely have to match.

But I see sellers selling Engine ECU + UCH + Steering ECU + Key(s):
https://www.ebay.co.uk/itm/Renault-Clio-MK3-2005-2012-1-4-16v-ECU-SET-UCH-BCM-Steering-3-Key-Fobs/192435717159

Surely the transponder ring + ignition barrel + steering lock are also required?
(and why is this seller also selling the fuse box, is this required?)
https://www.ebay.co.uk/itm/Renault-Clio-mk3-2007-1-4-16v-ECU-Kit-Engine-ECU-Fuse-key-locks-8200461733/332596750059

Wouldn't the door locks also need to match the steering lock?
Could the existing steering lock and door locks be used if the existing metal part of the key is put together with the fob of the replacement?
 

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Super fantastic Mod Technical Supremo Nice Guy
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41,056 Posts
Re: Clio III 1.4 16V immobiliser issue

Not on the laptop just yet John, so no real info, or wiring diagrams in front of me..
For UCH, unless virginized then its not going to work unless new..

Then it will still need configuring.
Thats why people go down the route of fitting a complete kit..
.
Have you checked the fuses in the interior fuse box...
Just going do dogs tea, and will switch the laptop on , and have a look..
 

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Discussion Starter #4
Re: Clio III 1.4 16V immobiliser issue

Cheers.
Yep, I'm just trying to determine what the 'complete kit' is, some sell the Steering ECU (I didn't even know these existed) with the kit, some sell the transponder ring.

I did check the fuses, there's an UCH fuse that's completely covered up


But it was fine


I didn't hold much hope for that fuse being blown as I guess nothing in the car would work.
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

ALM/UCH...fuse.. , put me your Oval plate back on mate..
Can fill all the info in, and see whats fitted to your car
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

Under bonnet fuse box you have a relay and a fuse for the start system.
If you look you will see a place for 5 relays, ( Not all have 5 fitted in this line )
Square fuse box but with a triangular part missing, Opposite side, top relay is the starter Relay, and that row of fuses 3rd fuse down is the starter...
 

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Discussion Starter #8
Re: Clio III 1.4 16V immobiliser issue

Under bonnet fuse box you have a relay and a fuse for the start system.
If you look you will see a place for 5 relays, ( Not all have 5 fitted in this line )
Square fuse box but with a triangular part missing, Opposite side, top relay is the starter Relay, and that row of fuses 3rd fuse down is the starter...
Ok, I'll have to check these in the morning.
But I don't think it's starter related due to the rapid flashing of the immobiliser light.
I've no idea how to check/test relays though.
I do now have a multimeter :)

 

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Discussion Starter #9 (Edited)
Re: Clio III 1.4 16V immobiliser issue

top relay is the starter Relay, and that row of fuses 3rd fuse down is the starter...
That fuse is fine, the relay I couldn't remove!
But as said, this isn't a starter issue, it's an immobiliser issue (rapidly flashing immobiliser light).

I've had the UCH out, but there's nothing much I can really check. It's obviously getting power or else nothing inside the car would work.

The cars MOT expires in 2 days time, so it's not gonna make that :frown2:
It needs to get on the road ASAP, so I'm gonna get the Engine ECU + UCH + Steering ECU + key fob.
If that fails then it's auto electrician time...


Before I order the ECU set, can anyone confirm whether or not the following are also required (matching the replacement ECU's)...
- Dash Clocks
- Transponder ring (I think it doesn't need to match key or ECU?)
- Main Engine Fusebox
 

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Discussion Starter #10
Re: Clio III 1.4 16V immobiliser issue

I think this may be the safest option:
https://www.ebay.co.uk/itm/RENAULT-CLIO-MK3-1-4-ECU-KIT-LOCK-SET/273123200397

It includes:
Engine ECU
UCH/BCM
Steering ECU
Key + Fob
Ignition barrel
Dash clocks

Are the dash clocks needed? Other sellers are selling only Engine ECU + UCH + Steering ECU + Fob.

What happens to the mileage shown by the car? Where is this stored? in the dash clocks or engine ecu or uch?
 

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Discussion Starter #11
Re: Clio III 1.4 16V immobiliser issue

Decided against this one, it's an older UCH than what's in the car currently.

Last 2 questions on the subject...

1. Is the Steering Lock coded to match the UCH & Engine ECU ?
as there are sellers selling ECU sets without Steering Lock or Key:
https://www.ebay.co.uk/itm/Renault-Clio-MK3-2005-2012-1-4-16v-ECU-SET-UCH-BCM-Steering-3-Key-Fobs/192435717159

2. Is the Steering ECU coded to match the UCH & Engine ECU ?
as there are sellers selling ECU sets without Steering ECU:
https://www.ebay.co.uk/itm/Renault-Clio-Mk3-ECU-and-clock-set-full-ECU-and-Clock-set-1-4-16v-K4JG780/222905681659

Come on good peoples, someone must know :smile2:
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

All 3 have immo written in them..
Time to buy an interface to read and find the issue...
If you have a laptop, running xp or 7 , lots to chose from, ranging from 35£ to 60£,, These will confirm the fault(s) before condemning a UCH.
An ECU kit unless you get exact match . Then configurations will need changing in the UCH to match your car..
Also gearbox type, was the car you got the donor kit off, fitted with the same Engine code, as all set differently in the Injection Control Module..
 
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Discussion Starter #13
Re: Clio III 1.4 16V immobiliser issue

An ECU kit unless you get exact match . Then configurations will need changing in the UCH to match your car..
That's just it, I'm trying to figure out exactly what's required for an exact match.
Some sell with the Steering ECU, some without.
Some sell with the Steering Lock/Ignition Barrel, some without.

I ordered this nearly TWO WEEKS ago and it's still not turned up, it took them a week after ordering to mark it as despatched :surprise:
https://www.ebay.co.uk/itm/Bluetooth-TCS-CDP-Pro-Plus-for-autocom-OBD2-Diagnostic-Tool-8PCS-Car-Cables/132546543465

My main computer is a Mac, but I have a Windows 10 laptop :surprise::grin2:
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

That dongle/bluetooth, might only read Engine, if so it wont show a fault with immo system..
You can always Run the interface with a Virtual XP system..
 

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Discussion Starter #15
Re: Clio III 1.4 16V immobiliser issue

I have a bluetooth OBD dongle and Torque app on my Android phone, that only reads Engine fault codes.

I ordered this £50 one from fleabay to help find the "Braking Fault" that appeared a couple of weeks ago as it says it can read ABS codes.
Incidentally, the "Braking Fault" hadn't appeared in the past couple of days before this immobiliser fault struck. And trying the key again this morning, it's appeared again!!!
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

Yes that should read all the system..

Will it work on 10, or Mac

Ignore the Bluetooth part as in, DONT use it, even if you get it to work, Hard wire it to the laptop with the USB lead..

Allow it to do an ISS on the system. Make sure you have a pdf creator installed
Adobe do one, think its a free download,,..
Save the faults Dont get tempted to clear any, until you have a full record of the codes..
If it comes back with an unknown fault code, still record the number...
Once you have done an ISS, leave the search with the lower back arrow key.
Now scroll down and find the IMMO and scan this, ..
Make sure Tinternet is OFF,
 
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Discussion Starter #17
Re: Clio III 1.4 16V immobiliser issue

Cheers,

It's due to arrive tomorrow.
It won't work for Mac, hopefully work for Win10.
I have access to a laptop with Win8 if that fails.
 

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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

Not a Cat in Hells chance of it working on 8 ouch..
Might even struggle on 7 unless all downloads are installed,
Pretty sure it does not work on 10

Will go and have a check for you,
 

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Technical Supremo, Platinum, I let the Dogs out
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Super fantastic Mod Technical Supremo Nice Guy
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Re: Clio III 1.4 16V immobiliser issue

Last official version was 2013 R3, No mention of it not working on win 8 or 10
After that all fake shi!!y software,,.. so dont be surprised if its not all its " cracked " up to be
 
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