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Warranty and Modifying delemma

6461 Views 33 Replies 16 Participants Last post by  Tufast
Hyundai says they have a 10 year 100,000 mile warranty on the drivetrain of their cars. Hyundai is also saying the Genesis Coupe will be a Tuner car. So the delemma I see is that Hyundai is advertising the Coupe a certain way, almost implying that modifications will happen or even encouraging it. So will hyundai support their warranty if a person does modify their car? If not, what kinds of modifications will void the warranty? That being said I don't expect them to back up a warranty if I am running 30 pounds of boost.
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We've been discussing this on another forum as well. 1st of all I'm not going to be argumentative about this, just stating the facts from the dealers view point & trying to be unbias as possible. Keep in mind that this is only one particular dealership, one particular service dept, & one particular service advisor, so it may vary as you frequent other dealerships. In the end, the people you are dealing with will make he difference.

If you have a particular part that is under warranty & the dealer can not prove that it failed as a direct result from a specific modification that you made or by lack of/improper maintainance that you had preformed elsewhere (other than the dealer), they are required by law to replace that part if it is still under warranty according to their guide lines.

If you have an internal engine part that fails due to the boost being increased & the dealer can prove this is why the part failed, then they have the right to decline that repair. So, to answer your question, yes turning the boost up to 30psi could cause the decline of a repair, esp since Hyundai, in this case, has disclosed that the engine could only take up to 29psi of boost.

Hyundai has promoted these engines as tuner friendly, but that does not mean they intend to warranty it if it is modified. I will say this though, Hyundai is pretty lax with regards to mods done on their vehicle brand compared to most other manufacturers. Minor mods such as CAI's & catback exaust hardly ever cause a decline on a repair. When they do, it is usually due to the customer installing or having installed the airflow meter/sensor in backwards after a CAI installation. Which I can't fathom since there are arrows on the part showing the direction in which the air should be flowing.

Part of the reason Hyundai has such a small turbo installed on the 4 cylinder & the boost turned down is so they can warrant this engine 10yrs/100,000 miles. They also did it so people would have a reason to choose the 6 cylinder over the turbo4. Finally, of course is fuel economy. So if you plan on turning the turbo up, don't count on Hyundai warranting the engine. Although, I'm hoping if we are still using the factory turbo, we install a better flowing I/E, have the turbo turned up, then the vehicle tuned, that this will not void our warranty.

This will be the 1st time that I've had the opportunity to deal with Hyundai's warranty regarding turbos. So, it is new territory for me. I am happy that the factory turbo itself will covered 5yrs/60k miles from my understanding, unlike most manufacturers 3/36 basic (bumper to bumper) warranty.

I've been working as a Hyundai service advisor for the same svc dept for over 10yrs & I can tell you this, I know Hyundai makes good, dependable, quality cars & parts that last a long time as of late & I trust this GenCoupe will be no different. In fact, I think it will be built even better/stronger than anything else thay the have built up to date, due to the fact they know we as consumers are going to be hard on both these engines, transmissions, suspensions, & brakes. They do not want word of mouth going around that they make weak parts after all this time, money, & energy they have spent trying to get their tainted past cleared up. In fact, if you compare the 3.8L V/6 being used in the GenCoupe to all the other variants being used in other Hyundai vehicles (Entourage, Veracruz, Azera, & even Genesis sedan) there is alot of difference. Block thickness & cooling jets on the underside of pistons, just to name a couple.

With that said, one of the 1st things I'm doing after the break in period & my 1st oil change at 3,750mi, is to switch to Mobile1 synthetic oil. Second, I will take my car down to the dump & put it on the scales & have it weighed with a 1/4 tank of gas. Third, I will take the car to be Dyno tested at Buschur or where ever I intend on having my tuning done. Fourth, I will purchase I/E & install parts. Fifth, I will return to Buschur to have the turbo turned up & vehicle retuned. Sixth, I will have vehicle dyno tested again to see my gains. I hope at this point the I'm still under warranty, but I am not counting on it. I will then roll like that for a year or two before doing any other engine mods.

Eventually, I will purchase the rest of my go fast parts , install them, retune, & dyno again at Buschur etc....
Note: When I replace my turbo with a GT35r, I don't expect Hyundai to warranty my engine if this caused it to fail.

With that said, I'm actually a rather easy service advisor to get along with. I win the quarterly award for highest CSI for my region (south east) on a regular basis & for good reason, I take care of my customers, I'm honest, & unbias. My job is to represent the dealership & the customer, so I'm a mediator of sorts. I have 7yrs of college in the environmental field, but continue to do this because of my love of cars & the care for my customers. Most of my customers have told me if I ever dared leave that they would follow me to what ever dealer I went to. If I left the field, they said they would be out of sorts. So, I'm still here doing what I do, even though I'm burnt out. If anyone ever has a question regarding a Hyundai or it's warranty, please just ask. That's what I'm here for & it's better to know prior to rather than aft.

Sorry, so long winded, but I thought this was a topic that needed discussing in depth.:zzz:
Now this is a man with a plan. Well thought out and I could feel the conviction. I agree though. If you are going to mod the engine, in effect you are going to void most of your warranty. That will put stress on every aspect of the car. More speed and power equals more stress and wear. It should not be the dealer/manufacturers responsibility to repair/replace when stresses are put on a car beyond what it is engineered and sold for. I am not saying it is not over engineered by them to help you/us tune/mod them, it is done more with a wink. It can take it (to be proven), but your on your own at that point. I have no problem with that especially at the price point these cars are suppose to sell. Better to mod a 20k dollar car vs. a 35k car like an EVO IMO. I realize the EVO is a track beast with AWD and plenty of electronic wizardry but I am driving my car on the street 99.9% of the time, and find that stuff nice, but unnecessary for me.
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deff awsome info! but as you stated it depends on the service department and how far there willing to work with you. I can say for a fact i own a 03 sonata thats got a lil mods done (cai,exhuast, simple mods), my warrenty was denied for a power steering line, how the two co-inside no idea to me, and my boy who drives an 05 evo went to replace his wing becasue the clear coat wore off, they denied his warrenty also beacuse his car was modded so, long island dealers are rough lol
There is no link to the engine and a steering line failure. You should have fought that and made them explain how it is related. Also, those mods you did should void NO PART of your warranty. Those are replacement parts that wear. Unless Hyundai is going to give you free parts in order to keep your warranty in tact, you are free to use any aftermarket part on those items (air intake and exhaust). The paint on the wing is insane. Unless it was a repaint on an aftermarket wing, there should have been no problem unless you were outside your 3 year 36k bumper to bumper, and even then it may fall under the anti-corrosion part due to flaking paint.
This is well said. However, that does not make for good customer service. If the dealer truly feels that your mods have led to failure, they have legitimate grounds. There are plenty of people who hack around on their cars, misuse and abuse them, and then expect to have the warranty cover them when something breaks. Most people who drive normally will never have a powertrain issue. Unfortunately, companies like MITSU, make products that cater to the young speed freaks that mod and tweak, they really don't care if you don't buy again because nothing else in their product line is going to appeal to those EVO buyers anyway when they move on after being dissatisfied. Most older buyers would not settle for the comfort losses that come with that type of car, so most go through that stage in life and move on to more docile machines anyway.

Just ask the BIG 3 what years of dealership failure, mistreatment and lack of warranty has left them when it comes to customer service. They then wonder why they have no customer base left. Maybe it is my age or my gray hair, but when I go to a dealer, I never get harrassed or questioned. If you are 20ish and you own an EVO or SUBIE or whatever and you come in with transmission problems, that probably does send up a red flag if they never see transmission problems from a 40 year old driver. If all trannies that come in with problems are with younger buyers and owners, it probably means something.

That does not make it right, but you have to be real. If you are young and hot rodding and racing and beating on your car daily (just look at you tube for more than enough examples) then you may have problems. I feel that if I purchase an EVO X and go in with my two kid seats in the back, I am a professional, and I just dropped 30-40k I expect a certain level of service and I doubt they think I am hammering the car on the track. The same if I go with the COUPE. If I show up and know that I have not abused the car and they say sorry, there is going to be a problem. If I do know I hammer it and I get denied, then I can deal with that also. I know I screwed it up and was just trying to sneak one by.

You should not buy any car that you cannot afford to make the repairs on, regardless of what they are. IE I don't buy German luxury cars because I do not want to be paying the price for those parts. I stick with mainstream, simple machines.
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