I nabbed this from another forum who's name will remain unmentioned but if you need to reset the service interval indicator here's a method than MIGHT work.

NB: No one can tell me why it works in some vehicles but not others.

With ignition turned off, press and hold LH instrument panel button in the dash area.
With button depressed, turn ignition key to position I.
Continue to hold for five seconds until "SIA reset" appears, then release the button.
It will flash "reset SIA 3600 kms" and "Inspection".
Press the button for another five seconds until "Reset" appears.

Switch the ignition off.

Good luck !  Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top
1998 90 TUL FFR Hard Top XD Wolf
1993 90 Tdi

*Gone: L405 4.4 VSE, L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

Does this leave any trace on the ECU etc.? Don't want anybody invalidating their warranty.

Didn't work on mine!

Found this (below), is slightly different procedure, maybe this will work on someones car:

Resetting the Oil Service or Service Interval Message.
Ignition key must be “off”.
• Press and hold the trip odometer button in the instrument cluster (left button), and turn the ignition key to the first position (KLR).
• Keep the button pressed for approximately 5 seconds until one of the following words appear in the display: “OIL SERVICE, or “INSPECTION”, with “reset”.
• Release the reset button and press and hold it again until “reset” begins to flash.
• While the display is flashing, press the left button briefly to reset the service interval.
After the display has shown the new interval, the following will appear: “END SIA

Tried both methods of resetting my display but both do not work Anybody know any other method?

I haven't found any other way to get this reset on a MY06+ vehicle apart from actually paying someone with the Testbook/Testbook clone to reset it or by actually getting the service done.

Anyone know better???

Mine currently says 03.2009. What will it say when this expires? (I know I only have to wait a few more days, but I'm impatient!

Thanks, had service done at an independant 4x4 garage £345 no vat ! he kept all the parts and showed them to me at the end he did a good job and cheap , i thought but he did not have a testbook he only ever resets them by the manual method but it would not work.. Anyone know how much should expect to pay a land rover dealer to reset??

pyramid1235 wrote:

Thanks, had service done at an independant 4x4 garage £345 no vat ! he kept all the parts and showed them to me at the end he did a good job and cheap , i thought but he did not have a testbook he only ever resets them by the manual method but it would not work.. Anyone know how much should expect to pay a land rover dealer to reset??

pyramid1235 wrote:

Thanks, had service done at an independant 4x4 garage £345 no vat ! he kept all the parts and showed them to me at the end he did a good job and cheap , i thought but he did not have a testbook he only ever resets them by the manual method but it would not work.. Anyone know how much should expect to pay a land rover dealer to reset??

Pyramid,

I'm afraid that's the same issue I had with my local indy garage, I specifically asked them if they could reset the SI and they said yes. After the service they said they couldn't do it afterall but assured me of a fix. In the end they had to pay the local LR dealer the cost of a service to do it! Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top
1998 90 TUL FFR Hard Top XD Wolf
1993 90 Tdi

*Gone: L405 4.4 VSE, L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

Just as an item of information since this is a sticky: the service interval reset using the trip odometer button and the key only works on BMW based models. Jag based models (touchscreeen nav) need a diagnostic computer/tool. See the 'Blackbox Basic Bits' thread for more info. 
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)

Found this http://www.roverupgrades.com/Range_Rover_Hidden_menus.html a while back I have done the oil change interval time which worked on my 04 V8 L322 .

A good place to see how to do a blue tooth upgrade too.. (slightly off topic).

hey all just stumbled across this sight just in case any one needs it

http://wiki.answers.com/Q/How_do_you_reset...ange_Rover


 02 Range Rover HSE Zambezie silver 4.4

Of note on my BMW equpiied 03 TD6 (not touch screen) you need to have the drivers door open sufficiently that the "Key in Ignition" warning pops up otherwise if you sit with the door shut - zilch.

I've had to reset mine as the lad at the main agent couldn't manage to remember the procedure - that said I paid for the cheap service. Only hope he remembered to put the sump plug back  2010 Disco XS TDV6, 2009 Freelander 2 GS

Previous Landrover products -1990 110 TDI CSW, 2003 TD6 Vogue - RRC TD Vogue, RRC v8 Fleetline, Disco ES V8 LPG, 101 Ambulance "Morph", 1964 SIIa Auto Powered by Jag 4.2 Lump - "Percy".

no luck on my 2002 model, will try with the door open sometime soon.

the other instructions I have seen ask if the date was exceeded, but I don't see those questrions, aybe they are not displayed on the RR display as it is too small or something?

will keep trying

4rovers wrote:

no luck on my 2002 model, will try with the door open sometime soon.

the other instructions I have seen ask if the date was exceeded, but I don't see those questrions, aybe they are not displayed on the RR display as it is too small or something?

will keep trying

Slightly different info here:
http://www.fullfatrr.com/wiki/Secret_Codes

Only slightly