bump...

I've been looking around the internet to give some instructions on how to remove alarm - but can't see anything obvious.

My main task is to stop these hazards flashing all the time, so I've been told its an alarm issue.

Can someone help me identify which bit is the alarm please? (Is the ECU the alarm? I'm not sure on the terminology. Is it the metal box thing at top of pic below?).

 

If it's an original alarm system it's most likley to be a Thatcham unit so you may have better luck searching the Internet for Thatcham.

 

Lots of water ingress issues. Channels blocked with debris at one point resulting in water in cavity under windscreen (and at one point water coming all over feet/petals inside car).

Not just specific to Megane or Renaults but almost certainly ANY modern car, of similar design, checking that the scuttle drains are clear should be a routine maintenance task IMO. Especially look for leaves. Remove ASAP. Can also test / clean the drains by pouring a warm water and detergent mix in the drain slots below the windscreen lower edge, e.g. on my Clio this should make a puddle under the rear of each front wheel arch.

Personally I reckon getting the interior thoroughly dried out might solve most of you electrical issues.

HTH

Large dents in both wheel arches (gender specific spacial awareness issue :d)

 

Thanks. Yeah I should have regularly cleaned out the channels.

I have the car under cover and off road for the moment as hazards are permanently flashing.

I intent to remove the alarm and fully dry it out and cross my fingers that it works.

I'm not sure which bit is the alarm at the moment though!!!!

 

I've removed the glove box - but still none the wiser as to the location of the alarm.

Can someone help?

[55 plate Megane Oasis 1.6]

 

The alarm unit is actually in the boot, behind the carpet liner on the passenger side. The connector for the alarm is somewhere under the glovebox in the picture you posted (you might have to remove the UCH).

The alarm going off might be faulty sensors, or, more common on these is the wiring is routed near the indicator wiring which apparently somehow triggers the alarm - these need to be shielded or re-routed slightly.

PS, if you find the connector, I'd appreciate it if you could post a pic of which way the loom appears from as I'm trying to locate it but can't find it....

 

Thanks.

The alarm going off was caused by the internal movement censors - had that for a long time and just got used to pressing start 5 times when leaving car.

The issue I have now is that the hazards are flashing all the time. Someone said it sounded like an alarm fault so I've been trying to track it down.

Now that you pointed me in the right direction I have completely removed the alarm. Doesn't appear to have suffered any water damage though. (I'll take it apart later to make sure).

I was hoping that removing the alarm would stop the hazards flashing - but it hasn't. How do I stop them flashing????

Also not sure what I'm looking for in the glove-box cavity. I'd love to just run the car without an alarm. But how?

Also I've removed the electrical board to see all the connectors to it, but still non the wiser.

Any recommendations?

-------------------------------
Alarm Out:

Alarm connector (in boot)

This is looking in from the glovebox space to behind the cd player. Not sure what this blue connection is for:

Disconnecting the board (UCH?)

The board has a concerning pale section under the underside though:

 

I know the best way forward maybe to approach professionals on these matters. I am not such a person but if my car was suffering some of the symptoms you have mentioned in relation to the hazards being on, I would examine the hazard light switch.
Elsewhere others have suffered problems with the switches going bad, my '04 plate Espace was one such vehicle.
These switches have a few jobs to do in addition to switching the hazards on or off as required but also to reset an activation of the hazards after emergency braking activation.

Just a thought.

 

Thanks for the tip. I'll try and look at the switch.

I'm doubtful is the switch though. It does appear to be related to locking the car, as when I unlock then lock with key fob the hazards to seem to stop for about a second, then start up flashing again.

 

I'm not sure why the hazards are flashing, but it does seem to be a common alarm related problem on French cars. My boss' 307 had the same problem, but the hazards would turn off after a minute or so of flashing after the car was started. They would only start flashing after the car was unlocked or started - can't remember which.

Also, not sure clear on what you're looking for under the glove compartment, but if its the alarm plug, then you will need to follow the wires which run dow the passenger side sill. The connecter you're looking for should be a 4-wire connector. I'm trying to retro-fit my alarm, hence looking for the connector (apparently they all come with the connector - just a matter of finding it!)

 

Also, not sure clear on what you're looking for under the glove compartment, but if its the alarm plug

Yes, it is the alarm plug that I'm looking for. I was hoping that disconnecting it would stop the hazards flashing, but doubting that now. Maybe I can just disconnect the hazard switch for now!

Will take another look later.

 

I also think more likely hazard flasher.

 

Thanks. Ordered a replacement for a few quid off eBay. Fingers crossed.

 

Only because I'm assuming if all indicators are flashing, but no horn hooting, then it can't be the alarm, please tell me I'm right (about the horn) :crazy:

 

No horn

Sometimes when locking (after pressing start 5 times) there is a constant and very loud beep though. (although it doesn't happen anymore now that I have removed the alarm altogether. Think I'll just leave the alarm off the car now).

 

I had very little hope that a new switch would sort it out. Found one on ebay for under £2.

After replacing it I put battery terminal back on and the hazards were still flashing.

My hopes dropped even further - until I pressed the switch. Success!

My locking issue must have been part of the same issue (same switch board), as both work like a dream now!!!!!

Due to historical water ingress I was convinced it was a bad electrical fault - but a new switch has done the job

:devil::devil::devil:Thanks to all that took the time to post in this thread.:devil::devil::devil:

Now I just need to sell it and trade up... anyone want a 55 plate Megane (52k, 12 months MOT) with a massive dent in the wheelarch? :d

 

hello Could you please confirm which switch you have changed? I got the same problem

 

In the Renault Megane Mk II Estate Car, the alarm unit is located behind the interior panels in the boot compartment on the right-hand side (that is, off-side / driver’s side).