Independent Renault Forums banner

1 - 20 of 38 Posts

·
Registered
Joined
·
35 Posts
Discussion Starter #1
I have a Renault Laguna III GT (09). Its got an intermittent Steering Fault / ESP Fault some times its a orange warning the next its a red warning stating STOP.

I have continued to use the car since this started 3 weeks ok, car drives fine.

I have used a cheap ODB II reader and a foxwell code reader to check for fault codes but both show nothing!

It looks like fault is with the rear wheel steering, when fault is NOT present I can clearly see rear wheels turn left and right (via wing mirrors), when driving at low speed.

When fault is present the rear wheels don't turn.

The other day on a short journey i turned a corner and STOP - Steering Fault occurred and the steering wheel went 45o out of sync. I stopped car and restarted and all was fine with no error messages and steering wheel back to normal. I have only ever seen this once.

Any help would be appreciated.
 

·
Super fantastic Mod Technical Supremo Nice Guy
Joined
·
41,437 Posts
My first thoughts would be a poor Earth,,
Info on your car really is limited..
If you post your Oval plate ( exclude vin ) I will have a look.
Sorry never worked on one so cannot offer any practical advice.. But will look to see how the system is supposed to operate
 

·
Registered
Joined
·
35 Posts
Discussion Starter #3
Hi my car is a Renault Laguna 3 GT 180 FAP. I am thinking it's a control thing (electronic/electrical) rather than a mechanical thing. As the fault seems to come and go. I have just purchased an icarsoft i907 code reader to help me debug.
 

·
Registered
Joined
·
35 Posts
Discussion Starter #6
My iCarsoft Multi-system Scanner i907 for Renault arrived today i plugged it in with the fault present on the dash and i get the following error:


DTCd4000
Invalid 4ws multiples signals

Anyone??
 

Attachments

·
Registered
Joined
·
41 Posts
My iCarsoft Multi-system Scanner i907 for Renault arrived today i plugged it in with the fault present on the dash and i get the following error:


DTCd4000
Invalid 4ws multiples signals

Anyone??
Hi I have the exact same error code from icarsoft RTII on my Laguna III GT 205

I tried to clear everything, without luck and the steering wheel fault still persists!

I am at my wits end on this, don't what else I can do. It occurred after front wishbone and rear axle bushes were replaced!
 

·
Registered
Joined
·
35 Posts
Discussion Starter #8
I attempted to dig a bit deeper today seen as the fault is now more permanent than not! I got underneath the car to inspect the controller/actuator for the rear steering it's not as easy as I thought! I wrestled off the heat shield above the back exhaust silencer (that's now for the bin). That gave me slightly more room to then detach the electronic handbrake mechanism (4ws control box is on top of this). This is where I hit a snag! The rear silencer is now preventing me from accessing the control box!! Referencing the manual, tells me I have to remove the rear silencer!!! At this point I gave up to tackle my broken drivers side window mechanism (broken wire) i stripped it out ok only to find the part I ordered from France is the wrong one! Raging!! So all in all I've has a sh#! Day. I put everything back together and the power steering fault was gone, alas only for 2 miles now it's back with avengence!
 

·
Registered
Joined
·
35 Posts
Discussion Starter #9
1 other thing to note when I was under the car I did manage to squeeze my hand up to remove one of the connection to the 4ws control box. When I reran the icarsoft code reader it gave the same error message with connector out. Possible cable loom issue? ***55358;***56596;

Snow permitting I will have another look tomorrow.

I'm really starting to see why the Laguna III got such bad press!!
 

·
Registered
Joined
·
41 Posts
1 other thing to note when I was under the car I did manage to squeeze my hand up to remove one of the connection to the 4ws control box. When I reran the icarsoft code reader it gave the same error message with connector out. Possible cable loom issue? ***55358;***56596;

Snow permitting I will have another look tomorrow.

I'm really starting to see why the Laguna III got such bad press!!
Any luck? I have ordered a ESP sensor to try and will give it to my mechanic. I am away until end of next week, but when it does get installed and if it helps, I shall update
 

·
Registered
Joined
·
35 Posts
Discussion Starter #11
Not had a chance to look at it yet. I'm planning on getting under the car at the weekend. I did manage to get my hands on a spare 4 wheel drive control module. This is the unit that sits on top of the electronic handbrake. So will fit that. My fault is now permanent!! Not a concern, as I've now driven over 800 miles with this fault.
 

·
Registered
Joined
·
35 Posts
Discussion Starter #13
Update - I have just spent the last 2 hours freezing my b#*@+# off lying under my GT coupe.

I have now removed the EPB module and the 4ws control module!

Interesting find, there should be a ground wire on the drivers side wire loom that connects to the metal carrier.

On mine it's just a connection, ground wire is fraied away to nothing!!

I traced it back to the wire loom (had to cut the insulation back a bit) but it was there also very fraied.

I will tidy up the metal carrier and reattach a new ground wire tommorow. Then reassemble everything and see if it fixes it.

I have a spare 4ws controller which I will try if the fault is still there!! I will attempt to up load some pictures.
 

·
Registered
Joined
·
41 Posts
Update - I have just spent the last 2 hours freezing my b#*@+# off lying under my GT coupe.

I have now removed the EPB module and the 4ws control module!

Interesting find, there should be a ground wire on the drivers side wire loom that connects to the metal carrier.

On mine it's just a connection, ground wire is fraied away to nothing!!

I traced it back to the wire loom (had to cut the insulation back a bit) but it was there also very fraied.

I will tidy up the metal carrier and reattach a new ground wire tommorow. Then reassemble everything and see if it fixes it.

I have a spare 4ws controller which I will try if the fault is still there!! I will attempt to up load some pictures.
Any update. I had the ESP sensor changed without any luck! I am eagerly waiting to see how your earthing wire fixes it. It's driving me mad. The car would be so nice to drive if I could fix this
 

·
Registered
Joined
·
35 Posts
Discussion Starter #17
Earth wire had no effect, changed it, continuity now ok.

Power steering fault still present. I then sourced a second had rear steering actuator (it too had no earth wire) and voila fault fixed!

With both actuators off can I checked the wiring all okbas gas as open/short circuits go. So looks like something internal. I will have a look at some point.

So for me fault fixed!

Took car for test drive, all now ok, I now have rear wheel steering again!!
 

·
Registered
Joined
·
35 Posts
Discussion Starter #18
Just reread my post English was awful!

To sum up fault is 100% rear actuator fault. No obvious wire faults so fault must be internal to the actuator.

If replacing manually I will attempt an overview:

1. Jack up car and secure on blocks.

2. Remove drivers side rear wheel.
3. Disengage EPB (I have a foxwell code reader).
3. Remove EPB cable from brake caliper and release cable from its guides. Then dissengage battery. To stop EPB re-engaging.
4. Get under car and remove bolts from EPB carrier (on mine 2 one side, 1the other).
5. With carrier bolts removed lower EPB & carrier (it's a tight fit due to rear exhaust silencer). This should give you access to the 2 connectors on the 4WS control unit. This is accessed via drivers rear wheel arch it's tight but you can just about get your arms in there!
6. With both electrical connection off you now have to free up the wire loom.
7. Wire loom it routed over the petrol/deisel tank. There are 2 securing clips. These 2 clips are only accessible by dropping the tank. No need to remove, loosen bolts then just drop tank about an inch. This will allow you to remove wireing/unclip wireing loom.
8. Now loosen and remove both nut/bolts from the actuator and chap out with a hammer. It's s heavy beast so be prepared to catch it.

On my first attempt I did not disconnect the battery and the EPB re-engaged whilst still disconnected from the calliper. It is impossible to use the foxwell or manual override release machanism in this state (car logs ECU fault and foxwell Is useless + manual release is way to tight). If you also do this remove battery + terminal, which then frees up manual release.
 

·
Registered
Joined
·
41 Posts
Just reread my post English was awful!

To sum up fault is 100% rear actuator fault. No obvious wire faults so fault must be internal to the actuator.

If replacing manually I will attempt an overview:

1. Jack up car and secure on blocks.

2. Remove drivers side rear wheel.
3. Disengage EPB (I have a foxwell code reader).
3. Remove EPB cable from brake caliper and release cable from its guides. Then dissengage battery. To stop EPB re-engaging.
4. Get under car and remove bolts from EPB carrier (on mine 2 one side, 1the other).
5. With carrier bolts removed lower EPB & carrier (it's a tight fit due to rear exhaust silencer). This should give you access to the 2 connectors on the 4WS control unit. This is accessed via drivers rear wheel arch it's tight but you can just about get your arms in there!
6. With both electrical connection off you now have to free up the wire loom.
7. Wire loom it routed over the petrol/deisel tank. There are 2 securing clips. These 2 clips are only accessible by dropping the tank. No need to remove, loosen bolts then just drop tank about an inch. This will allow you to remove wireing/unclip wireing loom.
8. Now loosen and remove both nut/bolts from the actuator and chap out with a hammer. It's s heavy beast so be prepared to catch it.

On my first attempt I did not disconnect the battery and the EPB re-engaged whilst still disconnected from the calliper. It is impossible to use the foxwell or manual override release machanism in this state (car logs ECU fault and foxwell Is useless + manual release is way to tight). If you also do this remove battery + terminal, which then frees up manual release.
Firstly, congratulations, you must be happy driving the car now! I really hate driving mine, because I know how it feels and the annoying red light!

Blimey - actuator is not going to be cheap!!! Could you let me know where you sourced the actuator from and how much you paid? My car is worth a couple of grand so cannot imagine spending an arm and a length on the actuator!

Can the actuator be fixed/ serviced/ refurbished - some erudite forumites may know of a place? Open to suggestions as long as its not buying a brand new one costing half the price of my car!
 

·
Registered
Joined
·
35 Posts
Discussion Starter #20
Yes car feels SO different to drive now.

Makes me think it has never worked.

I was lucky enough to have a breakers yard close to me in Shotts (Scotland), close to Glasgow. They specialise in Renault's. They are currently braking 3 different Laguna GT's. I got the only one with the actuator wire loom intact the other 2 had the connection cut off.

If you can solder I would defo but one then use the 2 connectors from your faulty one.

I paid £175 for a complete one (earth wire had to be added, see previous post), so should be wiggle room for lower price).

I was quoted £1200 + labour for a new one!!!

They have website and also sell via eBay.

I have now driven over 100 miles without the dreaded 'power steering' fault.

As regards repair, I am planning on opening mine up. I too think they should be reparable.
 
1 - 20 of 38 Posts
Top