Thread: Radar cruise control?

Doesn't your vehicle have adaptive CC?

Sadly not. At least as far as I can tell Graeme.

I understood that ACC was standard on MY11/MY12. I'll have another look at some of the release reports I have.

FFRR people have enabled the 'Jag Criuse with Queue' feature in the CCF using their IID tool to get the 'stop then go again' feature.

Edit: No, it wasn't standard - had to be optioned.

Originally Posted by Graeme

I understood that ACC was standard on MY11/MY12. I'll have another look at some of the release reports I have.

FFRR people have enabled the 'Jag Criuse with Queue' feature in the CCF using their IID tool to get the 'stop then go again' feature.

Edit: No, it wasn't standard - had to be optioned.

So the question remains...I'm wondering if it can be retro-fitted? At $200-oddK it bloody well should've been standard.

All the build specs that I've looked at in my hunt for a MY11/12 with e-diff only have 'speed control' specified and all the steering wheel pictures that I have retained do not have the extra 2 ACC buttons just behind the set/incr and decr CC buttons.

The L494 and therefore presumably the L404 has an ACC ecu incorporating the radar unit mounted just below/behind the front bumper. If the last of the L322s have basically the same wiring then there should be a connector in the vicinity, in which case I suspect only the ACC ecu, the different CC switch bank and CCF changes are required, including setting the Jag queue feature.

I'll see what I can discover about the ACC ecu/radar unit.

Edit: The L405's ACC ecu/radar unit costs nearly 900 GBP excl VAT.

2 radar units and connecting harness approx 2000 GBP, ecu 160 GBP and steering wheel left switch bank 100 GBP if the wiring harness from the rear of the vehicle to the front is fitted (no specific body wiring harness is listed) plus enabling in the CCF. Approx $5K if buying the parts new but the expensive bits may be obtainable s/h.

Edit: It appears that the same radar units and ecu were fitted to the 2010-2013 RRS although mounting brackets are likely to be different.

The earlier RRS only has the primary radar unit mounted in the centre and the L404/L494 went back to a single centre-mounted radar unit. Hence I wouldn't bother with the secondary radar unit and connecting cable saving 800 GBP and mount the primary unit in the centre. The dual radar system reportedly doesn't detect motor bikes very well anyway.

Originally Posted by Graeme

2 radar units and connecting harness approx 2000 GBP, ecu 160 GBP and steering wheel left switch bank 100 GBP if the wiring harness from the rear of the vehicle to the front is fitted (no specific body wiring harness is listed) plus enabling in the CCF. Approx $5K if buying the parts new but the expensive bits may be obtainable s/h.

Edit: It appears that the same radar units and ecu were fitted to the 2010-2013 RRS although mounting brackets are likely to be different.

The earlier RRS only has the primary radar unit mounted in the centre and the L404/L494 went back to a single centre-mounted radar unit. Hence I wouldn't bother with the secondary radar unit and connecting cable saving 800 GBP and mount the primary unit in the centre. The dual radar system reportedly doesn't detect motor bikes very well anyway.

You're a veritable knowledge bank Graeme, thank you. Looks like an expensive luxury then. But could be an interesting project. I'll make some inquiries with the dealer as to whether, if I sourced the parts, they'd be able to fit it. (In the meantime, lovin' the Mercedes

These are the part numbers from a 2012 version of Microcat:

ACC ecu LR025949 (mounts in RR of cargo area)
primary radar unit YDB500560 (left side)
mounting bracket LR012689
secondary radar unit LR029157 (right side)
mounting bracket LR022947
radar link harness LR023028
left steering wheel switch bank (vin BA349700+) LR029644

Confirmation of the existence of the connector for the primary radar unit presumably behind the left front bumper and the existence of the ecu connector in the RR would be my first step.