Hi All,

57 Plate IS220d SE –Multimedia (3000miles done)

Only 30-40 mpg (40 if I drive like a typical Sunday driver!)
Rough on start-up (sounds like a concrete mixer) and has been known to take 10 seconds to fire up
6th gear unusable under 75mph

Does anybody relate to the above issues?

My dealer (Cheltenham) has had the car twice now, the first time the ECU was remapped and the second time they had it for the day to inspect the fuel pump.

Apparently Lexus are still fitting a rogue fuel pump which can cause over-fuelling. The only way to tell is if the dealer takes the fuel pump off and inspects the specification number of the pump.

Mine was the non rogue pump and so the dealer rinsed it through and re-fitted it but the issues described above still persist.

Any ideas???

Still love my Lexus though!!

6th gear is an overdrive gear and will not pull whatsoever, above 80 ish an its alrite, have you had the modified fifth injector fitted? also have themcheck the egr valve for clogging up, i personally have had over fifty mpg out of the diesel, and i know of 1 tech getting 61

I noticed that when I had one for a few days from my dealer. 6th was useless when using the cruise around 70. Sounded awful too. Only managed 37.5mpg too.

Any idea what the 5th injector refers too? As far as I have seen, a cylinder head has only one injector per pot. Is this refering to the main diesel rail? If anybody can explain, would be grateful.

I asked this very question to my Dealer - who explained that it was for emissions control - something to do with squirting neat diesel into or onto the cat converter? I took a double take at that point, but I'm sure that's what I was told.

the 220d diesels have a fifth injector which adds extra fuel when the engine is under heavy load, early models had a problem where to much fuel was being added and not burnt causing the injector to clog up, at the time there were no modified parts available an the cars had the fifth injector replaced and an ecu remap was carried out in order to prevent this happening again, modified parts are now available and all diesels are proactively remapped with the new engine flash update
ps the fifth injector is round the back of the cylinder head close to the bulkhead

is my car which was delivered in november07 likely to require any modified parts do you think?

Hi all
Your car has already the modified fifth injector (which is fitted since july 2007), and has surely the last ECU soft (the 6th soft and probably the last !) which exists since dec 2007... So your your problem is not caused by these parts.
Concerning the fuel pump, can you tell me if what your dealer told you about it : Does it concern is220d models of 2007 only, or even before ? And when was this problem corrected in production ?

I've also got an 07 is220d and am happy with it except for the fuel and oil consumption. Just stepped out of a 2.0 tdi Audi which i was getting 44mpg. I'm now getting a miserable 32mpg if i drive like a grandad. The vehicle also seems to be burning an excess amount of oil to me? Am i being daft or should i take it to the dealer (this is a major hassle for me).