2007 Lexus IS250 - Dreaded Check Engine Light - $1,300

Gear Review

Lexus IS250 Maintenance Update

Managing the 85,000-mile milestone and unexpected repair costs

~85,000

Miles

$4,050

Total Monthly Spend

5

Service Items

Table of Contents

• ①The Warning Lights
• ②Diagnosis and Immediate Repairs
• ③Full Maintenance Summary

Section I

The Warning Lights

It finally happened—around 85,000 miles, my 2007 Lexus IS250 displayed the dreaded Check Engine Light and VSC indicators. I had just changed the oil at the dealer a few weeks prior and replaced the rear axle and front bushings, so it was frustrating to see my dashboard light up like a Christmas tree right after.

 

Section II

Diagnosis and Immediate Repairs

I returned to the dealer, where they determined the issues were a dead O2 sensor and a leaking valve cover gasket. They believe that oil dripping from the gasket fell onto the O2 sensor, leading to its failure.

Repair Costs

The total bill for the primary repairs came to about $1,300:

Component	Service	Cost
O2 Sensor	Replacement	$600
Valve Cover Gasket	Replacement	$700

Tip: Address leaking gaskets immediately, as dripping oil can frequently lead to the failure of more expensive electrical sensors.

Section III

Full Maintenance Summary

In addition to resolving the Check Engine light, I also had some other maintenance and repairs done recently. The total cost for the month reached $4,050, which included the drivetrain and suspension work completed just prior to the sensor failure.

Itemized Maintenance

• →Rear Axle Replacement — $1,700 to address drivetrain wear.
• →Front Bushings Replacement — $800 for suspension maintenance.
• →O2 Sensor & Valve Cover Gasket — $1,300 to clear the CEL and VSC lights and stop oil leaks.
• →Oil Change — $250 standard dealer service.

Keeping a classic 2007 Lexus in top shape requires staying ahead of the maintenance curve.