Q: MDS solenoid #4 fault P3435 - questioning dealership quote

asked by on August 24, 2017

After several hours in diagnosis, dealership quote is ~$560 for cylinder four solenoid and harness replacement. Will replace other 3 solenoids for total of $907. 1. Is this quote reasonable or high?

Three local repair shops said they do not perform this, waiting for a quote from a fourth. The only thing my lifetime extended warranty covered was the harness.

  1. Would this quote include harness replacement for other three as well?

  2. I realize that since this is MDS it affects my gas mileage but is this really an optional fix?

  3. Would a local shop have ability to permanently or temporarily disable MDS?

My car has 103500 miles.
My car has an automatic transmission.

Hi Wilson. Let me try to answer your questions one at a time.

1) The quote for completing this service that you’ve listed is about average for dealerships. Generally, this is a dealer only repair.

2) You’ll have to contact the dealership to have them verify what is included in their services - we can’t answer that for you unfortunately.

3) Not really. The MDS not only impacts fuel efficiency but also emissions and vehicle performance. Not repairing this can result in a failed emissions test as well.

4) No - a local shop would likely not take on the responsibility of disabling this system.

You should contact the dealership to ask them about specifics about their estimate.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

How do I use my cell phone to dial a number in Uconnect?

When using Uconnect phone, you can say the number that you wish to dial. If you prefer, however, you can also punch in the number manually onto your cell phone. Simply write in the number on your phone and make...

Heater is blowing mixed temperature air into the cabin area.

Hi there. Check the blend doors to the heater system. The doors could have a leak with the weather stripping. Then check the air ducting in the dash up by the heater blower motor and see if there is a...

Does my 2008 Cadillac CTS 3.6 have two timing chains.

Hello. To answer your question, yes, this engine has two timing chains. If you have a timing code coming up then you may simply need to have the oil changed or there may be a more serious issue. If you...

Related articles

A Buyer’s Guide to the 2012 Dodge Charger
If If you’ve always loved driving performance cars but you don't know how you’ll fit a baby seat in a Mustang or a Camaro, the 2012 Dodge Charger could be the car for you. While it has the room and...
A Buyer’s Guide to the 2012 Dodge Avenger
The The newly redesigned 2012 Dodge Avenger is a really impressive addition to the mid-size sedan market. This model is Dodge’s answer to the likes of the Honda Accord and the Toyota Camry, and while it may not have quite...
The Best Used Cars to Buy If You Don’t Have Kids
Buying Buying a used car is rarely a simple process, but if you don’t have kids, you have many more options than those who have to account for additional passengers. There are plenty of choices out there, depending on your...