It most certainly is in the 2nd edition and later of the manual - it's not in mine, and the dealer insisted no break-in was required. Mike@JLR came through with the actual recommendations, and they then added them to the manual.


Think I had a thousand miles on mine by the time I found the recommended break-in. Oh well, at least I had fun!

 

Oops...my bad for assuming,sorry.

My dealer mentioned it was in the manual and mentioned that it was a first for Jaguar she thought.

 

I'm a bit surprised that the F Type has a run in requirement, given its touted as a high performance vehicle that's bordering on supercar level. I recall the day I picked up my RS5. When I asked the dealer whether there were any run in restrictions, he said, "No, that's pretty old school with today's engineering. You can pretty much pick up any RS model and drive it straight out of the showroom and straight on to the track."

When you buy a car this expensive, you don't want to spend the next month or two driving like a grandmother drives to church on Sunday's. You want to drive it like you stole it!

 

I sold cars for many years and this was pretty much true,you told more customers about properly bedding in the brake pads more than engine requirements...but there are two schools of thought (or probably more,lol) about how to break-in cars,and I'm a firm believer that cars "learn" your style of driving so if you drive say 9/10ths,your car will expect that treatment.

 

Well my vehicles have to last me 20-30 years (see sig block below), so I'm gonna follow instructions (and then flog the cr** out of it like I do the rest of them).

 

Mine had 4 miles on it when I got it, so I assumed that was broken in. My new (November build) coupe manual does have the Breaking-In instructions on p. 156. But, it is odd that the car is programmed to rev up on initial cold start, every time you start it. I did think that was bad practice.

 

Break-in instructions just say not to exceed 4500 rpm. It's no where close to that on start-up.

 

I understand that it's probably only 2,000 or 2,500 rpm, but that is still an immediate rev beyond fast idle, with initial low oil pressure. As an engineer, that just seems wrong. Also, the auto stop/start seems like a long term starter problem. With some quick math, a 5% gasoline savings amounts to less then $100 per year. I try to remember to turn that feature off most of the time.

 

IIRC and I'm not sure about Jag, but I thought that Eco start/stop worked by stopping the engine just after TDC on a cylinder that just completed the intake cycle. When you let off the brake the ECU fires that cylinder to start the engine.

 

I think you're right about that. It is a very gentle "restart" on a warm, well-lubricated engine, making wear and tear issues essentially non-existent.

 

You mean it doesn't use the starter to start the engine, it just fires a spark on the cylinder at (or just past) TDC. COOL!

 

I'd never stopped to think about it until now, but we've had 6 vehicles (3 current) w/ start-stop systems, and on none of them has there been any indication that the starter was involved in the restart. However, I have always marveled at how instant the restart was in all cases.

 

I didn't realize Jag was using that technique for a quick restart. That would take the long term starter issue out of the equation. I'm still not keen on the start/stop, though, and turn it off more than I leave it on.

 

I found a Jaguar instructional video online about the Intelligent Stop/Start System in a 2013 XJ. They described a tandem solenoid starter, and upgraded starter motor. A more recent video about the F-Type stop/start system does not mention the technical details, so it's not clear if they are using the cylinder firing technology, or just the tandem solenoid starter and upgraded motor.

 

Unfortunately, our systems are not so sophisticated. If the engine speed is less than 330 rpm, standard starter operation occurs. If the engine is still rotating above 330 rpm when the computer calls for a running engine, only the ECM is used to re-initiate engine operation. Apparently, the starter motor can be safely engaged at any engine speed under 330 rpm without grinding teeth.

 

Here's the Jaguar description from December 2012. It says it pre engages the starter for a quick restart.


Which Jaguar models are equipped with the system?

The Intelligent Stop/Start technology comes standard on our 2013 Jaguar XF and XJ sedans with V6 and V8 engines and the upcoming Jaguar F-TYPE convertible sports car.

It is not available on the XF 2-Liter or the XK Coupe or Convertible model lines.

What hardware does the system use?

It features a Tandem Solenoid Starter (TSS). This is a powerful and durable electric motor which replaces a standard starter.

It features twin solenoids and uses a secondary battery. The tandem solenoid allows for starter gear engagement and motor application independent of each other. It can pre-engage the starter gear and then rapidly restart the engine when required. It’s designed to re-start the engine in the time it takes to place your foot off the brake and move on to the accelerator.

Can you turn off the system?

The system can be turned off with a single press of a button, which is located on the dashboard. However, to maximize the benefits, it will default to “ON” each time the car is fully shut down and parked.

To learn more about Jaguar’s Intelligent Stop/Start system and to see a demonstration, visit:
https://www.youtube.com/watch?featur...v=p_eCX613WhQ#!

 

Apparently they eventually chose not to use that system on the F-Type. No mention of either tandem solenoids or "intelligent stop/start" in any of the 2016 tech documents.
We need to keep in mind that the 2014 F-Types had a different system (with 2 batteries). It is quite possible they were using this "intelligent stop/start" technology. I don't have access to the 2014 tech docs to verify.

 

I saw this thread the other day and also thought it was odd that the breaking-in instructions clearly say not to exceed 4k rpm, but on the start sequence, the car revs high (doesn't FEEL like it goes past 4k). so i watched the needle at startup and at least on mine, it pegs the top (8k) of the gauge - maybe that is just some cool theatrics?

I finally found the section on breaking-in in the manual: it is {hidden} on p. 156 of 242 (not exactly a CRITICAL PRIORITY section of the manual) - maybe their editor skipped the information hierarchy lesson in school?

 

Yea, theatrics with the gauges. It's not going to 8,000 rpm. Probably not even 4,000, and that does go against my old schooling about not revving a cold engine. But that was a long time ago, in a galaxy far, far away.

 

To see how high it actually revs on start up, switch the car on without starting it (keep your foot off the brake and press the starter button), then once the dials have settled down start the car.