Hyundai XG350 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Hyundai XG350

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Hyundai XG350 Problems

Rough Idle Due to Faulty EGR Switching Valve

A defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.

PCM software update to correct fause oxygen sensor code

If the Check Engine Light illuminates, indicating a problem with the front oxygen sensor, but the sensor tests okay, reprogramming the engine's control computer should fix the problem. Then, the Check Engine Light will no longer falsely illuminate and the acceleration, particularly from a stopped position, will be smoother.

Improved Alternator Available

If the alternator fails, it should be replaced with an improved design which is better able to replenish electrical power to the battery. The new alternator requires a different diameter drive belt.

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Hyundai XG350 Questions

What could be the underlying cause of my vehicle's acceleration problem? (1 answer)

I have been experiencing problems with my car since the 2016 summer. When it gets to a half a tank of gas, it 1. cuts off
2. takes about 5 or so mins to start up
3. barely accelerates
4. after driving it for about 30 mins, it smells like rubber is burning.
No check engine light appears, but t...

Why is my heat not working? (1 answer)

Blowers are working for a/c and heater but no heat comes out when on...

My door ajar light flickers on and off while I am driving and stays on sometimes (3 answers)

It sometimes stays on when the car is off and it drained my battery

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Hyundai XG350 Recalls

Recall 09V124000
HYUNDAI IS RECALLING 188,282 MY 2001-2004 SONATA AND MY 2001-2004 XG300 AND XG350 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK...
Recall 04V369000
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 301, "FUEL SYSTEM INTEGRITY" A VALVE ON THE FUEL TANK ASSEMBLY MAY NOT CLOSE PROPERLY. IF A VEHICLE ROLLS OVER AND THE FUEL TANK ASSEMBLY VALVE IS NOT PROPERLY CLOSED, FUEL SPILLAGE MAY ...
Recall 04V178000
SOME PASSENGER VEHICLES CONTAIN A FUEL TANK ASSEMBLY VALVE THAT MAY NOT CLOSE PROPERLY. IF A VEHICLE WITH A FUEL TANK ASSEMBLY VALVE THAT IS NOT PROPERLY CLOSED WERE TO ROLL OVER, FUEL SPILLAGE MAY OCCUR.

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Hyundai XG350 Reviews

I really LOVED this car when I first bought it. I've had it going on my third year and it's falling apart ! EVERYTHING is expensive to repair and most mechanics refuse to work on them I've noticed. I could have bought an old beater for what it cost me to have a timing belt put in and now that it's been replaced, the two sensors behind the belt cover are bad. Crankshaft Position Sensor and the C...
I purchased the 2003 used. For maybe the first five years, enjoyed the vehicle. Then the maintenance issues started rolling in. Some were the usual high-dollar maintenances. However, about a year ago, the fuel economy plunged almost over night. It seemed that the car was "drinking" gas as if it had a hole in the gas tank. (previously had a very small fuel leak under the hood, but it was fixed) ...
2005 XG350L. It's a great car. Have had it for seven years. 25 mpg.

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