Renault Laguna S reg.Heater fan?

hi , i have a renault laguna 2 2006 model. the heater fan works but ONLY blow COLD AIR, can u help ?? my email address is : tel 07833798478, Please please help as i cannot afford to take to car electrician etc....

Thankyou in advance.

Grant....

Grant
January 2017

I have a 2,0 16v 2004 i have leak from heater reitor how can i take out the reitor or repair

shubbara
February 2013

UPDATE on my previous. If the fan only works on 4 then the thermal fuse has blown and can be DIY fixed with a 79p component from Maplin. I did this 3 times and enjoyed a week or three of heater operation each time before it went again. Just yesterday I think that I've identified and fixed the probable root cause of the problem, the fan motor itself was running slowly or not at all due to a sticky bottom bearing... this causes less air to be drawn through the system so the thermal fuse runs hot, and blows. Standing on your head in the passenger footwell enables you to get the whole motor unit off ... it has a bayonet fitting. Clean out any crud, free up and lubricate the bearings, put it back together. Fingers crossed it'll last this time.

Mike Rochester
July 2010

It's almost certainly the thermal fuse blown, it lives in the airflow of the heating duct behind the dash. On my car it's accessible by removing the glovebox and delving in the innards. This was by far the most trying part of the job, once cracked the rest is straightforward. Some cars have a credit-card shaped encapsulated resistor pack ... these are not fixable by the following method.

To avoid history repeating itself do check that you have not got any leaves or other crud partially blocking the airflow through the heater. The air intake is usually at the foot of the windscreen by the wipers, you'll have to remove a screening grille to get at it. Reduced airflow causes the system to run hot and the thermal fuse to blow.

I'm currently glowing with satisfaction at having just solved just this problem on my P reg Laguna RT estate saving myself 99% of the quoted spare part price by buying a 128C thermal fuse from Maplin for 69p!

If your is like mine, get behind the dash / through the glovebox opening and disconnect the multi-way plugs connecting the resistor pack to the heating duct and the blower motor. Once you’ve got it out you should see several little coils (like tiny electric fire elements) under a shield... carefully remove the shield. Under the coils runs a component that looks like a resistor or diode but is actually a thermal fuse ... it melts if it gets too hot. If you have a meter, check to see if it has blown. Mine had.

Cut it out, clean it up and get a magnifier on it to try to read the temperature rating. Mine was 121C ... the closest Maplin had was 128C = good enough.

IMPORTANT: If soldering the replacement into place remember that it's designed to melt when it gets hot. Soldering irons work at about 200C so you'll need a HEAT SINK between the iron and the capsule of the fuse to avoid melting it. I used a pair of long nosed pliers with a rubber hand around the handles to keep them on the job.

But ... it's worked a treat for me, I’m so chuffed!!

Good Luck.

Mike Rochester
October 2009

Cheers Aron. Will give it a go and let you know.

Thanx for reply George but it dunt work on any setting
Cheers anyway.

Gary
September 2009

Hi, i had same problem with my Laguna , the heater unit is located passenger side under dash just above foot level, you dont have to remove dash to get to it , there is a soft felt cover. First thing to do is check the connector blocks under there as people can accidently catch them with their feet and the connector or a wire going to it becomes loose, try some jiggling and maybe clean the block with meths or proper switch cleaner,(dry off all flamable substances with a hairdryer before reconnecting) I had been driving around freezing for 3 weeks last winter before finding this easy and quick solution, if this doesn't do it let me know as I have the manual , cheers and good luck
Aaron

Laguna Dci owner
September 2009

If fan works on speed 4 only, then new resistor pack required. Easy diy fix. will be closer to heater blower motor, usually located behind glove box in dash. Resistor pack usually under £20 from main dealer.

George.
September 2009