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ChrisCSL

Member Since: 10 Aug 2019
Location: Berks
Posts: 186

2014 Defender 110 Puma 2.2 XS CSW Santorini Black

Oil service light on again????

My oil service light comes on much more frequently these days. 3 months and 1k miles since the last oil service for example. It used to be every 12 months. 3 months can't be right? I have a mix of long, medium and short journeys. I must say the frequency increased since using fuel additive. I use Millers ecomax additive treatment. Might that have this kind of effect?

TDCi with 83k miles and very well looked after.

Cheers
Chris

15th Nov 2023 4:10pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2028

You are correct it should not come on in 3 months or every 1k miles if you are doing a mix of journeys and not just short ones.

The oil service message should only come on for 3 reasons.

1. It has been 12 months since the counter has been reset.
2 it has been 12,000 miles / 20,000 kilometres since the counter has been reset.
3. The ECU has calculated the oil may be diluted by 7% of diesel due to active DPF regeneration cycles. This is based on miles traveled, style of driving ( lots of short journeys etc) and number of regenerations. This is denoted in the workshop manual

https://www.defender2.net/forum/topic74776...il+service

So if yours has come on after 3 months and 1k miles are you sure the counter reset procedure was undertaken and worked when you last did an oil change ?

Else your vehicle is doing a great deal of active regens which might indicate an issue with your DPF differential pressure sensor, the pipes between it and the DPF, wiring and connector to the DPF differential pressure sensor, or a partially blocked DPF.

Have you had any DPF lights illuminate on the instrument cluster ?

15th Nov 2023 5:05pm

ChrisCSL

Member Since: 10 Aug 2019
Location: Berks
Posts: 186

Thanks Ian

Oil service light was reset and no DPF light. I’ve not noticed the DPF regen being more frequent either. Could still be an area to investigate though. Appreciate your help

Chris

15th Nov 2023 6:08pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2028

A little while ago I posted a request on the Nanocom forum, in effect I asked if they could enable a facility on the Nanocom to show the status of the 3 things that trigger the oil service light. I.e how may days etc since last reset, how many miles/km’s since reset and the calculated oil dilution.
So far they have not provided this capability but that data must reside somewhere in the ECU and would really help with issues such as yours.

Ps For several years I have used millers ecomax each time I fill up and have not had any issues so far re the oil service message coming up.

15th Nov 2023 8:19pm

ChrisCSL

Member Since: 10 Aug 2019
Location: Berks
Posts: 186

Thanks Ian. The fact that you also use Millers with no issues is good intel for me.

Would have been really good to get this on Nanocom.

15th Nov 2023 8:30pm

LandRoverAnorak

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

Lots of us use Millers and have been doing for years without issue, so that can definitely be discounted. 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

16th Nov 2023 8:51am

ChrisCSL

Member Since: 10 Aug 2019
Location: Berks
Posts: 186

16th Nov 2023 9:53am

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