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crowtexx123

Member Since: 13 Feb 2022
Location: West
Posts: 3

Instrument Cluster Failure

Hey, Im wondering if anybody could help.
I have weird problems on my TD4 2.4. The Instrument Cluster likes to cut out sometimes (especially when battery isn't fully charged). I plugged in my Nanocom. It shows a error Regarding the Voltage( circuit voltage ABOVE threshold). When reading the supply voltage with the Nanocom of the Instrument Cluster it shows a voltage around 20V with the engine running(around 16V non running), even though the ECM reads a voltage of 14-14,2V(confirmed it with a multimeter). When the Instrument Cluster suddenly comes back to life it reads the same voltage of 14-14,2V.
Its quite an annoying error as the car runs with extremely reduced power with the cutting out Instrument Cluster.
Maybe someone had the same error and can help.
Reagrds
Crowtexx

13th Feb 2022 4:03pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20468

Check the electrical connector is secure to the rear, it maybe loose.

In the past though rare, it has been known for some members to have issues with the circuit boards in the IPAC with solder joints failing.
That’s just a possibility the two above options.

I think you can possibly change over the whole IPAC (instrument cluster unit) to a different one as the ECM/ECU has all the data such as mileage etc contained in it not the IPAC.
But I’m not expert on this, so take my advice with a pinch of salt.
Can anyone confirm?

Bog standard, but check the battery clamps are tight, and grouting points are clean and secure and no excessively loose fuses etc and things like that.

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13th Feb 2022 10:11pm

crowtexx123

Member Since: 13 Feb 2022
Location: West
Posts: 3

I finally could confirm that the IPAC itself is definitely the problem. Somehow the IPAC worked the whole summer without a problem. But as the temperature dropped in autumn the problems came back. To the end it became worse, so I changed the IPAC to a used one. Everything is working good now. The IPAC does not randomly cut off and the car has its full power back.
But the IPAC does not have the right data yet. It still shows the milage of the previous car. ABS and TC are illuminated as the car where it was plugged in before might have been a one without ABS and when I plug in the Nanocom it shows the VIN of the previous car.
Does anybody know how to change these data in the IPAC?
Im glad for every advise.

8th Feb 2023 2:32pm

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

I believe that that the IPAC VIN data can only be changed with dealer diagnostic equipment. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

9th Feb 2023 6:18am

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