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Defenderwc

Member Since: 23 Jul 2024
Location: Hampshire
Posts: 4

2015 Defender 110 gauge fault - tach & temp

Hi guys, I have tried to Google and search this site for an answer, but I have t found a solution yet.

Basically my gauges aren’t working fully. They were working for the last year, since I’ve had the car, but suddenly flickered the other day and the fault hasn’t repaired itself as I hoped it would!

Symptoms:
The tach is not functioning
The temp is in the red (even if the car is cold)
Battery light on (it is charging)
Traction light on

I feel this is a common fault, but I haven’t found a solution yet.

The car itself is was originally a TDI puma, but it has had an engine swap to an LT1 v8 and auto transmission. This isn’t (necessarily) related to the gauge issue as it has been running and functioning, and it still runs and drives now.

Thanks in advance!

Click image to enlarge

Last edited by Defenderwc on 23rd Jul 2024 12:42pm. Edited 1 time in total

23rd Jul 2024 11:29am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6604

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

Cluster has lost the incoming CAN bus messages to tell it what the engine is up to.

1988 90 Td5 NAS soft top

2015 D90 XS SW

23rd Jul 2024 11:49am

Defenderwc

Member Since: 23 Jul 2024
Location: Hampshire
Posts: 4

Thank you for your reply, Martin.

I believe you’re correct, but I’m not familiar with how it can lose its connection, and how to repair it. Do you have any advice?

I’m going through the fuses, and relays, at the moment.

23rd Jul 2024 12:23pm

Defenderwc

Member Since: 23 Jul 2024
Location: Hampshire
Posts: 4

This is my fuse / relay situation:

Click image to enlarge

23rd Jul 2024 12:39pm

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6604

As you have an engine conversion, you're a non-standard set up and so looking at factory LR info won't help here.

You might have an issue with the module/controller which is running the dash cluster from the LT1 engine.

You need to get support from the converter or the supplier of that module.

1988 90 Td5 NAS soft top

2015 D90 XS SW

23rd Jul 2024 12:46pm

Defenderwc

Member Since: 23 Jul 2024
Location: Hampshire
Posts: 4

Thank you. I’m a bit of a novice for defenders, it isn’t my usual project. The engine and work was done by wildcat, and I am unlikely to get a response there.

The gauges were working correctly, but the fault occurred when I was playing with the radio (probably coincidence).

I’m not entirely sure what controller is used, as the car came to me with no written information.

Can you help me identify the controller? Where is it commonly located? I have a spear tech ecu, and under the rh seat is a spear tech little box.

I’ve read posts on this forum where other defenders have showed the same issue - no tach, hot temp, but the advice was to remove and clean a fuse (which seems to good to be true, based on my experience).

Click image to enlarge

23rd Jul 2024 1:01pm

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