1994 Renault Laguna RT from UK and Ireland - Comments

Same problem, heated rear window doesn't work, but wing mirrors do and light is lit, heater doesn't blow out hot air, just slightly warm, and the radio reception is very poor.

Cleaned the white connector as per previous post, and cleaned the earth connector (E3) in the boot, still the same.

If anyone knows what else to do, please post or e-mail martin@bedford89.fsnet.co.uk cheers.

- check the fusebox for burned connections

- make a bypass for both wires if cleaning of the white connector in the boot doesn't help.

Finally! I've been grappling with a Laguna rear-heater not working for nearly 2 years. Several garages were convinced it was a break in the element, but none have ever been found. I was convinced it was something to do with the earth connection. This thread has proved my thinking was more likely. On inspecting the white connector I've found one of the terminals green! Cleaning doesn't seem to work so I guess installing a by-pass wire is the only option.

Can someone confirm what wire(s) need to be by-passed? Many thanks.

First of all, sorry for my bad English.

I do have a Renault Laguna RT from 1994.

First I do have problems with the heating fan. So I disconnected the fan from the system and installed it directly to a switch (manual design + fuse) connected to the car battery. So far so good. The system now blow warm air, but only when the car is idle. The more I drive, the colder the air. I have to note that the temperature meter is pointing between the first bold bar and the second one (only when driving), when the car idle the needle is pointing exact the right position (second bold bar).

Next thing, when I switch the lights on, all dashboard light shows up, but not the one of the heating system. Only the button for the rear window heater lights up.

Does anyone knows what's going wrong? (the situation didn't changed because of the manuel set-up).

Problems with the heated rear windscreen: For some reason a common fault on Lagunas. The cabling needs replacing. It goes from the fuse box into a white junction box behind the plastic below the passenger door. This cable then goes to a junction box in the boot. It's best to turn the switch on and test at both these points in case the problem is along there.

The heating fan not blowing hot could be a problem with the heater matrix. There could be several causes, but chances are it's corrosion. You need to disconnect the double hose connection from the matrix and flush the matrix forwards and back several times to make sure it's clear. Just remember after reconnection you will need to bleed the system to remove any air.

The heating control panel not lighting up just sounds lie a blown bulb.

I am sorry for my bad english.

I have a laguna 1994 1.8 and have a problem with the gasoline meter; it doesn't work. With a full tank, the meter is on the minimum limit. What can I do to fix this problem?

Thank you.

The fuel gauge showing empty when full sounds like a faulty sender, probably around a fiver from the scrappy and 10 minutes work, best to have as little fuel in the tank as possible as when you remove the old one fuel will go everywhere.

Hope this helps.