Hey guys,

I have a 2014 IS 350, Rwd, 8-speed auto with around 89 000km (55 000 miles)

I purchased the car a year ago with 76 000km (47 000 miles) from Lexus with a full service history, one owner and no prior issues.

For some background, my daily commute is around 99% highway driving of around 20 miles a day.

From what I found online, these 350’s don’t have too many issues with them and are quite bulletproof.

But, at my recent 90 000km/yearly service the following work was done:

•all 6 spark plugs replaced
•air refiner element replaced
•engine oil changed
•clutch fluid changed
•both front shock absorbers replaced
•a junction box for the wiper stalk was replaced
•1litre gear oil was added.( no leak to my knowledge)
• faulty TPMS sensors replaced

They did a 360 inspection at Lexus before I purchased it to transfer the extended warranty to my name but nothing was found.
The interior and exterior is immaculate and the car is garage parked 24/7, with no accident history.

Now 13 000km later this hefty service was done.
I know much of the work was “consumable” parts and stuff thats bound to be replaced, my concern just remains whether this seems like a one time thing, or if this is a tendancy for these models for the age it has in years?

Are there any major issues to do preventative maintenance for/ look out for?
I take it to Lexus for all maintenance and issues, but I would like to stay on top of the maintenance and make sure the proper work gets done.

I love this car to bits, and we do not get the new 350 models over here, its all hybrids now.
So I would love to keep this one running for the next 5+ years if its a realistic goal?

Thanks in advance for any feedback.

 

Nothing seems odd about your service, except the wiper junction box. Were you having problems with the wipers?
Got 73k miles on my 2014 IS350 AWD (so 6 speed), and I have no reason to think it won’t continue serving me well, with just normal maintenance for the next 5 years and beyond (plugs never changed and no running issues).

 

Thanks for the feedback.
Yeah the wipers would switch on whenever they liked, and only at max speed.
So even with auto disabled they only had one speed, it was max speed.

They had the car for 2 weeks trying to find the issue, no codes were thrown and the sensor seemed to be fine.

Turned out to be a faulty junction box between the wiper stalk and the motor, so when it made contact the wipers would go mad.

 

What is clutch fluid, and gear oil, exactly? Is the latter the rear limited slip differential?

Other services that you might need are transmission fluid change, flush the coolant before it gets acidic, and change the cabin air filter (you can do this yourself, super easy). I'm assuming 'air refiner' meant the engine air filter.

Except for the wiper and TPMS, everything else seems like normal higher mileage maintenance items.

 

What about brake fluid? Not to go too much into maintenance, but I don't see that above and would think it should be done every 3-4 years.

These cars are pretty solid. Just keep on top of maintenance and don't ignore weird noises or anything out of the ordinary.

 

should you flush the coolant prior to the 100k mile suggestion if the car passes a certain age? my car is a 2018 and and has about 55k miles on it. i've had the dealership do a ton of preventative maintenance so far (complete transmission fluid drain and refill, diff fluid replacement, regular oil changes, spark plugs replaced, brake fluid changed, battery replaced, etc.) but haven't touched the coolant yet. thoughts?

 

No idea regarding the clutch fluid, the dealership was closed by the time I received the final invoice.
As for the gear oil, It was the rear differential oil that was changed.

I will insist on the coolant flush and gear oil change with the next service

Thanks for the feedback, really appreciated.

 

incorrect info

 

sounds like ATF WS fluid then. But dealers dont like to check it, let alone, replace that fluid.

 

incorrect info

 

I have 2015 is350 with 71k miles (114k km) and no issues with the car.

Q1 - i am assuming gear oil was used to replace rear diff oil. Although it needs 1.35L of it, not 1L. And you dont add it to the diff, you drain the old oil and then replace it with new oil of the stated quantity.
Q2 - this car has no manual transmission, so no clutch servicing would be in store for it. The auto-box does have clutch packs, but if you start talking about those as separate items, that mean you have a tranny rebuilt in mind to the tune of 2-3K dollars.

 

Is this a common maintenance procedure on the IS? I have never heard of such a thing.

edit: my bad

 

The poster is from Namibia, I don't know if their cars come with manual transmissions or not but he stated he had his "clutch fluid" changed. I just took that at face value.
Older model IS300's had manual transmissions and changing the fluid in the clutch system is not unheard of, why would you think this is trolling?

 

He said 8-speed auto in the very first post of this thread.

My guess is ATF is what was meant. Maybe, in the area, it is colloquially known as clutch fluid, but that's my best guess as to the misnomer.

If so, that's great. It is pretty uncommon to get a non-enthusiast-owned IS with transmission fluid that has been changed.

edit: Sorry for the "trolling" comment, apparently I am jaded.

 

My mistake then. apologies.