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Skyvisions, ASE Certified Technician
Category: Lexus
Satisfied Customers: 14504
Experience:  Lexus Expert
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I have gotten the VSC light and engine warning going off,

Customer Question

Hi there
JA: Hi. How can we be of help?
Customer: I have gotten the VSC light and engine warning going off
JA: OK. To minimize me, please click the down arrow at the top right corner of this box.
Customer: Also lost power
JA: Is the power loss consistent, or does it fluctuate?
Customer: When it happens it stays
JA: What is the model/year of your Lexus?
Customer: 2008
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Nothing tried
JA: Anything else you think the mechanic should know?
Customer: Filled petrol by mistake last week, drained it and cleaned
Submitted: 1 year ago.
Category: Lexus
Expert:  Skyvisions replied 1 year ago.

Do you have the code numbers that would be set in the computer causing the check engine light to come on?

Customer: replied 1 year ago.
Where can I can get those from?
Customer: replied 1 year ago.
What can the problems be?
Expert:  Skyvisions replied 1 year ago.

In order to get the codes from the computer you need a code reader and plug into the OBD port under the instrument panel. I'm not sure what country herein or whether you have access to or can purchase a generic code reader but you can get one for about US$60 these days. By plugging into the port you can retrieve the malfunction codes from the engine control computer. Here in the USA most auto parts do it is a free courtesy. With these code numbers I can give you a better idea of what's going on. Is this something you be able to do?

Customer: replied 1 year ago.
I should be able to buy one quickly but where is the instrument panel?
Expert:  Skyvisions replied 1 year ago.

the OBD connector is under the instrument panel the instrument panel is the dashboard the connector is on the driver side up underneath you'll see the connector it should match the connector on the scan tool/code reader.

Customer: replied 1 year ago.
Are u able to share a list of those codes?
Expert:  Skyvisions replied 1 year ago.

There are way to many to list out. Did you get the code numbers and I can look it up.

Customer: replied 1 year ago.
No not yet but forgetting about the codes for a sec what are the possible reasons for my problem, it cannot be too many right?
Expert:  Skyvisions replied 1 year ago.

What model Lexus do you have and is it loosing power or performance?

Customer: replied 1 year ago.
IS 220 Diesel model 2008 and yes it is.
Customer: replied 1 year ago.
Can you please confirm if it could be an engine failure?
Expert:  Skyvisions replied 1 year ago.

I cannot definitively Tell you whether the engine is failing with what little information I have. If you are losing power that does not necessarily mean that the engine is failing, it could be something in the injection pump or fuel pressure related to it. There could be a safety system set up causing it to lose power depending what the malfunction code is causing the check engine light to come on. As a general rule Toyota engines are very reliable and unless you've got excessive amount of miles I would have to think that it's probably more Engine control related Type of failure.

Customer: replied 1 year ago.
I have been told in the Lexus diagnosis that the EGR and the Water cooling pump have to be changed. Is that normal after 69,000 miles?
Expert:  Skyvisions replied 1 year ago.

I would have to say that that is probably not normal but the car is going on nine years old it may be more due to the age then the mileage. That would affect the coolant pump and the seals there. I am more surprised that there is a malfunction EGR system given the mileage because typically it has to be higher mileage before the EGR valve systems start to mess up.

Customer: replied 1 year ago.
Should I challenge Lexus to cover it? Also could you please confirm if the EGR would be affected in case I have filled the tank with petrol knowing that my car is Diesel. Also note that I drove the car for around 1 mile but then drained the petrol completely out via a professional and replaced it with Diesel.
Expert:  Skyvisions replied 1 year ago.

It never hurts to ask for assistance but is not likely given the age that Lexus will do anything about this. Filling the tank with petrol version diesel should have no effect on the water pump and is likely going to affect the EGR valve either. I would be more concerned about internal engine issues if it ran long on gasoline or a diluted mixture.