I really, really want ACC on my non equipped car and am considering doing what I need to to get it.

I know no one here has answers to this end but neither does the clueless dealer.

Would you guess that the main parts I'm missing are a module and a steering wheel lever since my sensors are already included or do you think there are completely different sensor units?

The funny thing is most people that have it always say they never use it. I live in the Bay Area and traffic here is horrible. It seems like I would use it often if it worked as advertised.

 

I think it uses a different sensor than the parking sensor, I believe it looks like a black sphere in the lower grill.

 

Adaptive cruise definitely does not use the park assist sensors. If it is the same or similar as the X350 adaptive cruise module, you better be sitting down when you hear the price of a replacement module.

 

Try searching for "adaptive cruise" on this forum. This question has been asked and answered before. Costs were estimated at $8-9K with the radar unit alone being ~$5K. You'd have to REALLY want it.

 

It can be done.

The expensive items are the radar sensors, and then you need the steering wheel controls.

From what I can tell there are two sensors, and the mounting brackets. Together they come in around $4000 ($2700 + $1300 + brackets) . Steering wheel switch around $175

https://www.parts.com/index.cfm?fuse...ISTANCE-SENSOR



The trick is the programming. Needs a little "hacking" which the average Jag dealer might not be able to do.

If someone was quoted $8-9k then a big chunk of that would be just for the programming.

I know a guy who can take care of the programming for a lot less than a Jag dealer would charge...

If you get lucky pulling the radar sensors from a wreck, it wouldn't be all that expensive for us to do...

 

nice info here....

how can you do the programming if were not local to each other?

 

Programming can be done remotely, just need a laptop with SDD loaded, and a genuine MongoosePro cable.

 

As someone who has ACC fitted I would suggest that you take a car with it for a test drive first. It is very keen to apply the brakes and the preset distance from the car in front, even on its lowest setting means cars are continually cutting in, which means you are to close and the car increases the gap. In heavy traffic it just doesnt work and in light traffic I would rather have the normal CC. Its a lot of money, make sure you want they system before paying.

 

I agree with the above, I did not specify it on my X351 but when I got the Super V8 last year it had it fitted. Sometimes in light traffic it is fine but as mentioned the "Gap" settings can allow people to pull out in front of you on motorways, the car also will apply the brakes if you are going round a gradual bend and the radar picks up the rear corner of a vehicle on the inner lane that is not causing you a problem at all.
Do try it first !
I would not really pay any extra to add it to a car in the future .

 

On the roads that I frequent, if the ACC allows enough room for someone to pull ahead of me, SAFELY, that would be fine with me. However, ACC or not, most of the idiots on the road that try to emulate a NASCAR driver on the track, generally give me a heart attack by pulling a 17 foot long automobile into a 15 foot long spot!


Consequently, if the system works at advertised, I would finally be stopped as myriads of cars continually pulled ahead, slowing me down to a standstill! I don't think that it's ready for prime time.
Luck with that

 

Now that I have had it on 2 Jags and not have it on two more I am kind of undecided on its worth.

After driving my typical 300 miles, mostly freeway, commutes with ACC equipped cars, in my non-ACC cars I miss the ability to "set-and-forget" for changing traffic speeds and patterns. Regular cruise is a pain under those circumstances, having to disengage it and re-engage it with speed changes in varying traffic flows.

On the other hand, the "cars cutting in" issues are also a pain to deal with. I basically drive with my finger hovering over the ACC Cancel button that I press when a car cuts in front of me. As long as that car is accelerating, all is fine. If the car is pulling in front of you and decelerating, my ACC will apply the brakes to varying degrees that can catch you unexpectedly and unpleasantly. BTW - my brakes wear noticeably faster on my ACC cars, suggesting frequent brake applications, some of that you probably do not even feel.

The other situations that irritated me were while driving in the inside lane into a left turn while cars are also present in the outside lane. When the radar beam suddenly encounters those cars in the outside lane, due to the radius of the turn, suddenly it will hit the brakes, at times rather hard. That can actually be somewhat dangerous due to the traffic behind me.

So, mixed baggage. I would not spend the extra monies for the feature. I do wish that the ACC feature would be disconnectable while the regular cruise still working.

 

I had ACC on the Infiniti FX I bought 9 years ago and recently sold. I found it interesting and a nice gadget to play with from time to time, but certainly not a feature I assign high importance. As others have said, in light traffic it can be pleasant when just leisurely cruising along. However, for most "real world" driving applications I did not find it useful. In fact, the best use I got out of it is when I went to sell the vehicle since so many people really want the option and place a value on getting it. Me personally, having had it for several years, I would not go out of my way to get it as an option or pay extra for it; not worth it IMO.