2014 D4 in Limp Mode

Loose earth lead?

There are two earth studs just in front of cranking battery box.

There is also one behind the kick plate trim panel by the drivers foot. This one is used in the Traxide setup I have, so could be used for your DBS and be loose (factory earth cables are on it). Even if not used for DBS I guess it could be loose.

What about your cranking battery negative lead? Shouldn't need to be touched but could have been. And the positive too.

Scott

Hi Scott,

Main battery terminals are tight. I will check behind drivers kick plate as you mentioned.

My DBS was earthed on the body in the engine compartment. I have totally removed the DBS; so that is a non issue now.

Thanks
Brad

On mine, the power cable to the rear uses the A pillar kick plate earth stud. So I would have to check this one even if the aux battery was disconnected. Yours may be different.

Brad.
Have you got an electric trailer brake controler??? Only ask as they have to be wired to Land rover specs,its way different from what a normal Auto Elec would consider.
Andrew

Hi Andrew,

No electric brake controller; it's my next install when I get the car sorted.

Rear aircon? What about the wires that run through under the rear aircon? If it's only on jolts maybe it's a bared wired touching something on the jolt ?

Quote:

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Originally Posted by Bradmc

Hi Andrew,

No electric brake controller; it's my next install when I get the car sorted.

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When you do,make sure you read the D4 trailer brake thread in the stikys up top.Some very important info there.
Ive just tried towing with my Redarc Tow Pro,the trailer brakes are much more noticeable than behind the D2 which had a Technosha Prodigy.Very happy.
Andrew

Quote:

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Originally Posted by Meken

Rear aircon? What about the wires that run through under the rear aircon? If it's only on jolts maybe it's a bared wired touching something on the jolt ?

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Someone else on here had an issue with the wires pinched near the rear AC,on a late model D4.

The other thing you could do,is get the vehicle running stationary,with someone sitting in the drivers seat,and start wiggling every wiring harness accessible.
Then if the fault comes up you may be able to pinpoint where the issue is.

I know this is grasping at straws,but it may help locate the fault

Quote:

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Originally Posted by scarry

Someone else on here had an issue with the wires pinched near the rear AC,on a late model D4.

The other thing you could do,is get the vehicle running stationary,with someone sitting in the drivers seat,and start wiggling every wiring harness accessible.
Then if the fault comes up you may be able to pinpoint where the issue is.

I know this is grasping at straws,but it may help locate the fault

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Somebody bouncing the vehicle may also help too.
Perhaps a friendly nearby D4 pilot could help with the research,it could help us all out into the future;););););););)
What area do you live in???
Andrew

Perhaps try re-seating the fuses and relays - you never know. Also check what work was done on your last service, it might point you to an area they may have touched. The errors seem very "brake switchy" to me, check switch is properly positioned/plugged in - replace if in doubt, it's very cheap. What about wiring for the trailer plug? was that touched at all? could be a short back there.