Thread: 2011 D4 'Gearbox Fault' warning

So far so good with the beer can. Car runs very well. Gear changes are beautifully smooth and it could be placebo but I feel the engine is a bit more responsive. In fact a few times when I swore I was doing 80ish I was supposed to see I was trucking along at 100.

Thanks to everyone who has helped along the way with advice, theories and encouragement on this thread. It was this time last year I got the first GEARBOX FAULT messages and resulting instances of reduced performance.

1 x Gap iid tool, 1 x HPFP, 1 x door from a donor (thanks work neighbour for not using your rear view mirror), new coolant, 1 x fuel, engine oil, gearbox oil and air filter, 2 x sway bar D rubbers, 1 x set of gear change solenoids, 1 x zip kit, 20L of Lifeguard 6, new engine oil, a beer can , 6 x injectors, a new leak off line (didn’t actually install it) and probably a few other bits and pieces since first posting and this average motorist has been transformed into a week end warrior mechanic by the Land Rover magic. I even have a super nerdy spreadsheet of all work ever done on the vehicle since new!

I just gave it a bath and it looks flash. Very happy.

The TC is a bigger job that I care to tackle just yet though. I’ll see how I feel once I have watched all the vids I can find.

Thanks again guys. Hope your 2025 is off to a good start.

Oh yeah, forgot the heater matrix, front hubs, rotors and pads too. Yikes.

Originally Posted by Bananas

Oh yeah, forgot the heater matrix, front hubs, rotors and pads too. Yikes.

It sounds like mine - and I no longer dare look at my spreadsheet

However well done on the most recent beer can endeavour!

Originally Posted by Bananas

1 x Gap iid tool, 1 x HPFP, 1 x door from a donor (thanks work neighbour for not using your rear view mirror), new coolant, 1 x fuel, engine oil, gearbox oil and air filter, 2 x sway bar D rubbers, 1 x set of gear change solenoids, 1 x zip kit, 20L of Lifeguard 6, new engine oil, a beer can , 6 x injectors, a new leak off line

I gotta be honest...

All that work would have required more than 1 beer can for me!

A quick update after about 500km on the new injectors I thought was worth sharing.

I have been amazed by a few things.

I had a subtle knock I would hear when idling after starting. Kind of like tapping an anvil with a resin hammer. That’s gone now. I was choosing not to hear it and now I don’t!

The engine runs seems to run smoother at all revs and at idle it’s a smooth even idle whereas before it was a slightly rough idle.

I’m not noticing any smoke out of the exhaust in instances where I had come to expect it.

The average fuel consumption around town shown on the console has dropped from about 12.7 litres per 100 km to consistently around 9.7 litres per 100 km.

And the beer can is still there.

Fairly happy with that.

Originally Posted by Bananas

The average fuel consumption around town shown on the console has dropped from about 12.7 litres per 100 km to consistently around 9.7 litres per 100 km.

It'll be interesting to see if that's reflected at the pump over time.

I didn’t see any fuel economy benefits when I changed mine, but it definitely resolved my pre-ignition issue.

Originally Posted by Bananas

A quick update after about 500km on the new injectors I thought was worth sharing.

I have been amazed by a few things.

I had a subtle knock I would hear when idling after starting. Kind of like tapping an anvil with a resin hammer. That’s gone now. I was choosing not to hear it and now I don’t!

The engine runs seems to run smoother at all revs and at idle it’s a smooth even idle whereas before it was a slightly rough idle.

I’m not noticing any smoke out of the exhaust in instances where I had come to expect it.

The average fuel consumption around town shown on the console has dropped from about 12.7 litres per 100 km to consistently around 9.7 litres per 100 km.

And the beer can is still there.

Fairly happy with that.

Were they new new or new second hand?