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[TheBoy]

My Omega is the same. Box is ticked but the damn thing never changes, so I have to either do it myself or wait 6 months for the time to be right again. 

IIRC the Omega had to be told NOT to use RDS to auto change the time .... 

My omega, a 2.5CDX, changed the time automatically. As does/did every Vauxhall I've ever owned.

I think the PFL might have lacked the option, but certainly was there on all MFL and FL Omegas.

But not on either of our JLR products from the 2010 and 2016!

[Doctor Gollum]

9. Electric rear outer seats. With memory, heated, ventilated multi contour with comfort head rests and Isofix.

Strip boot, remove rear seats and front passenger seat along with rear carpet and remove front passenger carpet. Remove rear headrests, parcel shelf and rear seat side trims. Trim rear seat sound deadening to clearance the individual rear seat frames. Remove and replace the centre rear seat belt and all three belt anchors and receivers... This is necessary as the outer belt anchors have the fixed rear seat outer mounts bolted to them and the receivers for the outer seats are on runners to move with the seat base. The centre belt base is also different for the same reason.

Remove the pneumatic rear head rest brackets, these lower the headrests at the push of a button. Rearrange the airline for the centre headrest and refit the centre headrest bracket.

Run the wiring harness for the rear seat control ECU. This starts in the right hand rear boot and runs to the rear SAM, ground, into the cabin and across the rear bulkhead and forward to the Body Can hub under the driver's seat.

Run the wiring harnesses for the multi contour seats. One connects the rear armrest control panel to the front left fuse box and the telematics Canbus hub in the front passenger footwell. Tother connects the multi contour ECUs to the Body Canbus under the front passenger seat along with the front left fuse box. A third loom connects the ECUs to the rear seat backs. Fit the bracket for.the rear seat ECU along with the ECU and the two multi contour ECUs.

Connect the airlines for the rear seats to the existing factory connection on the passenger rear door frame.

Refit the carpets and front seat. Install the headrest motors and guide channels for the rear headrest Bowden cables along with the Isofix top anchors, (the lower anchors are welded in at the factory regardless of options. Fit the new parcel shelf with the Isofix covers and headrests.

Bolt in the seat base frames and connect the motor wiring. Then bolt in the rear seat backs and connect the motor/heated/ventilated and multi contour plugs along with the airlines then fit the seat bases.

Fit the rear armrest and frame and plug in the rear armrest. Fit the centre seat base brackets and seat base along with the upper seat back filler piece. Then refit the rear seat side trims.

Remove the rear door cards and remove the door handle trim plate. Fit the trim plate and switch panels for electric memory/heated/vented seat controls along with the additional wiring harness to connect the seat switch panel to the door ECU. Refit the door cards.

Plug in the laptop and clear all the codes out of the ECUs and programme the car for options added.

All in all, about 25 hours work.

Items required:

Wiring harnesses; £340. (A complete body harness from a donor and a new old stock harness plus some DIY but all to factory routing/colours/sizes.
Rear seat ECU; £60.
Multi contour ECUs (2); £50.
Individual heated/ventilated/multi contour rear seats, (including seat frames, armrest, centre base, leather side trims and filler plates) in upgraded leather from an S600 and correct colour. Also included the leather centre console from the same S600;

   £237 plus two steering wheels a grille and various random Mercedes spares.
Rear door wiring; £50.
Rear door switches and trims; £85.
Rear headrests, comfort and matching leather, from different source; £170
Rear parcel shelf for Isofix in correct colour; £72.
Centre seatbelt in correct colour; £50.
Rear seatbelt receiver's in correct colour; £50.
Hardware; £181.

Factory Option Cost: £3,140*

Install cost: £1,345.

Saving: £1,795.

* Includes the following options:
Isofix £80.
Comfort Ventilated Rear Seats (incl Heated seats) £820.
Rear Seats, electrically adjustable outer seats £1,120.
Memories for rear seats £240.
Multi contour rear seats £880.

Doesn't include the upgraded leather cost as the car had that from new, itself a £900 option on the S500. That said, I may yet source the front seats from an S600 so the leather matches exactly, although you'd struggle to tell the difference... This would add the massage function to the front seats as well, itself a £380 upgrade to the original options.

[STEMO]

When you insure it.........you know that box that says 'Any modifications?' 

[Doctor Gollum]

When you insure it.........you know that box that says 'Any modifications?' 

There's something to be said for only fitting factory options

I had that argument with the council when I put the Irmscher bits onto my ex plod between inspections. The Licensing bigwig had nothing to say when I pointed out that the car was on its third interior. Same when it got written off the first time... The rear quarter was brand new VX and fitted to spec and the car presented for inspection with a clear VIC check and fresh, clean MoT as he tried to claim that it was unroadworthy because it was a Cat C. Even he had to concede that he couldn't see the repair.

It is funny though, that if you stick chunks of plastic all over the car they count as performance modifications, but if you replace your glovebox with a nicer one, no one cares.

When the wheels get ticked off the list, they'll be declared as they'll be from a W222 but I doubt that will be an issue as they're factory wheels in a size available on the W221 albeit a different style.

[Doctor Gollum]

10. Additional convenience hook in the boot.

Post 2007 the W221 had two hooks under the parcel shelf for shopping bags, early cars only had one although the holes for the mountings are there.

Remove two push clips, insert the securing clips, hold up the hook assembly and fit the two screws. Took longer to type this.

Items required:

Hook assembly, £19.
Hardware, £3.

Factory option cost: £0.

Item cost: £22.

Saving: -£22.

Although it's a loss item, the practical benefit is obvious.

[TheBoy]

When you insure it.........you know that box that says 'Any modifications?' 

There's something to be said for only fitting factory options

I had that argument with the council when I put the Irmscher bits onto my ex plod between inspections. The Licensing bigwig had nothing to say when I pointed out that the car was on its third interior. Same when it got written off the first time... The rear quarter was brand new VX and fitted to spec and the car presented for inspection with a clear VIC check and fresh, clean MoT as he tried to claim that it was unroadworthy because it was a Cat C. Even he had to concede that he couldn't see the repair.

It is funny though, that if you stick chunks of plastic all over the car they count as performance modifications, but if you replace your glovebox with a nicer one, no one cares.

When the wheels get ticked off the list, they'll be declared as they'll be from a W222 but I doubt that will be an issue as they're factory wheels in a size available on the W221 albeit a different style.

You need to be careful, as in the case of an accident, some insurance companies will try to wiggle out.

In my case, they were claiming my insurance was invalid as I didn't state it had alloy wheels, and it was down to me to prove that that particular model came with them as standard.  Fortunately I still had the brochure, added to which by the time that was sent off, the other party had admitted full liability so my insurance no longer cared

Even options ticked at purchase are supposed to be declared now, which could be an issue on your Mercs, as they come pretty poverty and have to be specced up at purchase.

[Doctor Gollum]

Had a similar conversation with a previous insurance approved windscreen provider regarding a rain sensing heat reflective windscreen on the Omega. Long story short, they provided the screen.

The conversation at renewal goes something along the lines of:  "Any modifications to the vehicle?"
-"Nothing that wasn't available from the factory."
"Er, oh ok."

Of course now it's all online, the question gets asked very generically, if at all. If the insurance companies can negate their liability by failing to collect the correct information then they are complicit if that information is complete.

It's a largely moot point though as you can pretty much guarantee that they will use any excuse they can not to pay out regardless of what you tell them.

[STEMO]

They certainly won't pay out on what you've spent on it. But you knew that already 

[Doctor Gollum]

They certainly won't pay out on what you've spent on it. But you knew that already 

Indeed, but sods law it gets hit by an uninsured motorbicyclist the day after a major service and MoT with a full tank of fuel, because that's just how life goes.

[omega2018]

When the wheels get ticked off the list, they'll be declared as they'll be from a W222 but I doubt that will be an issue as they're factory wheels in a size available on the W221 albeit a different style.

What wheels have you got?  I have a set of 19" 9 spoke CL500 wheels that I don't like - too large and design is difficult to clean. I wouldn't mind swapping them for 17" or 18".  As standard the rears are wider than the fronts. This is the design:
  

[Doctor Gollum]

https://images.app.goo.gl/bhDXi

Theses in 18".

8.5J all round.

[Doctor Gollum]

I should add that they've been refurbished at some point previously but are showing some signs of wear and tear.