D4 Restricted Performance

[westek]

Hi Guys,

I was happy to say I'm the proud owner of a 2010 D4 HSE as of Tuesday last week, until it had to be towed this morning to LR.

The previous owner recently had the "Brake Switch" replaced due to a "Restricted Performance - Gearbox Fault". Apparently the first ever error in two years.

But again today the "Restricted Performance" error appeared before disappearing, but the performance of the actual car became sluggish.

Haven't heard back from LR as yet but was wondering if anyone else has experienced the same issue?

[101RRS]

Why was it towed - still drives with "restricted performance".

Mine still does 100kph with restricted performance illuminated.

Did you go through the ECU reset procedures as it often fixes the issue (at the time).

Garry

[westek]

Thanks for the reply.

The car still drove but as mentioned, seemed to be running ruff.

Being a new owner and never owning a LR before I wouldn't know what the ECU reset procedure was. Can you please explain what I need to do?

[Graeme]

Mine still does 100kph with restricted performance illuminated.

The 3.0 may barely get to 60 kph or may get to 100 kph depending on what's not working properly. I've also had the engine refusing to keep running above idle.

[101RRS]

I've also had the engine refusing to keep running above idle.

That is not restricted performance - that is no performance

[eddomak]

Thanks for the reply.

The car still drove but as mentioned, seemed to be running ruff.

Being a new owner and never owning a LR before I wouldn't know what the ECU reset procedure was. Can you please explain what I need to do?

Hi - welcome to the fold!

If you haven't had a chance, read the FAQ post as it is awesome and contains a lot of wisdom to keep in the back of your mind.

What a pain - a problem so early into your ownership period! But most of the time they are few and far between these days. Trust me - I wouldn't have bought another LR without a LOT of research first since my Freelander 1.8 was just totally terrible.

Anyway, back to the topic - if you have a quick look under the FAQ post, and search for "reset" it should take you to the right part - something about taking off the cables from the battery and touching them together. Your car owner's manual also has a section on this.

Cheers!

[101RRS]

Being a new owner and never owning a LR before I wouldn't know what the ECU reset procedure was. Can you please explain what I need to do?

Step 1 - Switch the car off - leave a few seconds then restart. If the issue still exists go to Step 2

Step 2 - Put handbrake on and switch off - wait until the handbrake light goes off (something like 3 minutes) this is generally considered the time required for the computers to go to sleep. Switch back on and if the issue still exists go to Step 3.

Step 3 - Switch off and lift bonnet - disconnect both battery leads and touch the +ive lead to the -ive lead (NOT BATTERY TERMINALS - LEADS ONLY). This neutralises any residual voltages in the car and ECUs. Leave for a couple on minutes and reconnect the leads to the battery (this process is basically rebooting the computers in the car. Restart the car. If the problem still exists go to step 4.

Step 4 - put face in your hands and have a good cry - Maybe for a millisecond consider self harm - when composed and if engine dead call tilt tray - if in restricted mode either consider driving and resist getting frustrated or to save stress call tilt tray.

On a recent trip from Melbourne to Canberra I have three engine faults between Glen Rowan and Gundagai - ranged from engine stop to engine idle only to restricted performance (100kph). All fixed by a restart and issues went away for the 200km from Gundagai to home and have not come back - faults just showed communication faults. Today I had airbag light and switching off and on cleared it.

Garry

[Mudrunner]

My 2010 3.0 SE did a similar thing after it's first long trip from Melbourne to Qld. We had been hammering through central Qld on our way to the Gold Coast when we were detoured due to floods around Gundawindi. Anyway it was a 13 hour driving day. The following day she fired up as usual, within about 3 mins after starting, I pulled out of a driveway and stuck my foot into her to beat some traffic. She was not at all responsive to my demands, very sluggish, no power and a bucket load of white smoke bellowed out behind me from the twin exhausts. This "Reduced Performance" warning came up on the dash and I thought I had done a head gasket. I pulled over and turned off the car. Wiping the sweat beads of my brow, I fired her up again - No warning, no smoke, no further issues for the next 2 years. I can't explain what happened but after the event I assumed the computer was unhappy about something?
Cheers, Shane.

[westek]

Thanks for all the feedback.

Called LR last night and they were still looking into the issue.

I will provide an update once I know what they found or didn't find.

I'll definitely try the reset next time.

[westek]

Just picked up the car.

The official response was -

"Check DTC's - P2264-00 water in fuel sensor circuit logged. Inspected for water in diesel - none evident. Removed and replaced fuel filter housing assembly to rectify.

Car is running well again, fingers crossed.