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Wessex517

Member Since: 28 Feb 2019
Location: Wellington, Somerset
Posts: 12

2014 Defender 110 Puma 2.2 USW Scotia Grey

Defender won't start in really hot and sunny weather

2014 Defender 110. After a few short runs after shutting down the engine it won't re-start. This only occurs on very hot sunny days (yesterday/today in Somerset). If I wait half an hour in full sun or 10 minutes with the bonnet in the shade it starts as normal. I put a code reader on it and the only red X I get is against CCM (under the code reader heading of I/M readiness). I'm hoping that this is just a faulty sensor. If so, is it something a rank amateur could replace?

11th Jul 2022 10:50am

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 1997

Are there any specific diagnostic trouble codes (DTC’s) that have been recorded, if so post here. That will help localise the problem.

Also can you provide more specific details about it not restarting. I.e Does the starter motor run but engine not fire up etc

11th Jul 2022 12:20pm

Wessex517

Member Since: 28 Feb 2019
Location: Wellington, Somerset
Posts: 12

I haven't been able to get any specific codes. It does say "No codes are stored in the module" and I don't know how to load them. The Auto web site doesn't list the Autolink AL319 for anything, including an instruction manual so I guess it's too old to be supported.

Out of 10 starting attempts eight will turn the starter motor but not fire up. The other two it will just make clicks noises and do nothing.

11th Jul 2022 1:12pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8020

2011 Defender 110 Puma 2.4 USW Stornoway Grey

Check earth leads Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

11th Jul 2022 3:34pm

Wessex517

Member Since: 28 Feb 2019
Location: Wellington, Somerset
Posts: 12

For corrosion and hi-res connection I assume? I'll get onto it tomorrow. Thanks.

11th Jul 2022 4:20pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 1997

Wessex517 wrote:
I haven't been able to get any specific codes. It does say "No codes are stored in the module" and I don't know how to load them. The Auto web site doesn't list the Autolink AL319 for anything, including an instruction manual so I guess it's too old to be supported.

Out of 10 starting attempts eight will turn the starter motor but not fire up. The other two it will just make clicks noises and do nothing.

On the first point, just plugging it in and it auto linking to your ECU’s should auto load any DTC’s.

On second point. Here you are re the manual for your reader. https://autel.attachments.freshdesk.com/da...X3F6RQIXLA

This is from their main support page . Right hand column, 3rd item down. https://support.autel.com/support/solutions/folders/8000078944

And yes could be an earth or potentially the ignition switch, lots on here re both issues.

11th Jul 2022 4:28pm

spudfan

Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4646

Check the coolant level. The Puma engine has a built in safety thing where it won't run or it cuts out if the temperature reaches a certain level. Something must be triggering your safety cut off. 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai

13th Jul 2022 1:56pm

Wessex517

Member Since: 28 Feb 2019
Location: Wellington, Somerset
Posts: 12

All suggested options checked with no improvement. Booked in with Evans Motorcraft who have latest diagnosis kit. I will advise the outcome...

14th Jul 2022 8:56am

Greyman110

Member Since: 29 Sep 2017
Location: London
Posts: 327

I had a warm start issue. Cleaning the contacts of the CHT sensor fixed this for me.

14th Jul 2022 10:09am

spudfan

Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4646

It is usually something small causing the problem. The problem is finding what it is! Good luck and keep us informed. 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai

14th Jul 2022 10:14am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20327

The clicking does sound like grounding issues or battery terminals similar to as JST suggested.

Especially the transfer box grounding points and battery clamps. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

14th Jul 2022 9:43pm

Wessex517

Member Since: 28 Feb 2019
Location: Wellington, Somerset
Posts: 12

System analysis resulted in:

P253F-00 Engine oil deteriorated. Cause (possibly) a very hot day in full sunshine, temperature 35C+ silver vehicle with black wing panels. Engine bay/engine heating to ambient temperature and vehicle driven 500 metres between shut downs (setting up marshalling points for charity run) engine generating heat and radiator fan having no chance to cool due to short run duration.

U3006-16 Control Module Input Power A
OBDII Codes ($03)
OBDII Permanent Coces ($0A)

No conclusion from these except that if it happens again don't use my amateur OBD (which resets the fault codes) but go straight to professionally equipped technicians for analysis (Martyn Evans - Evans Motorcraft - Taunton 0788 444 8469 much recommended).

Alternative theory is that when shutting down, after ignition key shut down, lock down with the key fob immobiliser. Otherwise the immobiliser system is thinking that the vehicle is being stolen and immobilising it. Unlocking the vehicle via the key fob may allow the engine to be started. As the fault is so rare (once a year) I have yet to try this.

Thanks to all that made suggestions to the problem. I hope that the above enables you to assist someone you hear of with the same problem in the future.

25th Jul 2022 10:02am

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