The Lincoln LS was equipped with the 5R55S (or 5R55N) transmission. they aren’t without their problems though, so let’s look at some of the most common Lincoln LS transmission problems, look at cost estimates and figure out what you can do about them.
Lincoln LS Transmission Models
Lincoln LS: 5R55S / 5R55N Transmission
Lincoln LS Transmission Replacement Cost Estimate
Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use our Get An Estimate feature to look up your transmission by VIN#.
Replacement Lincoln LS Transmission Prices:
|Transmission||Street Smart Transmission|
What are the DTC codes related to Lincoln LS transmission problems?
|P0705||Transmission Range Sensor Circuit Malfunction (PRNDL Input)|
|P0711||Transmission Fluid Temperature Sensor Circuit Range/Performance|
|P0712||Transmission Fluid Temperature Sensor Circuit Low Input|
|P0713||Transmission Fluid Temperature Sensor Circuit High Input|
|P0730||Incorrect Gear Ratio|
|P0731||Gear 1 Incorrect Ratio|
|P0732||Gear 2 Incorrect Ratio|
|P0733||Gear 3 Incorrect Ratio|
|P0734||Gear 4 Incorrect Ratio|
|P0735||Gear 5 Incorrect Ratio|
|P0745||Pressure Control Solenoid 'A'|
|P0775||Pressure Control Solenoid 'B'|
|P0795||Pressure Control Solenoid 'C'|
|P0797||Pressure Control Solenoid 'C' Stuck On|
|P0798||Pressure Control Solenoid 'C' Electrical|
Lincoln LS Transmission Recalls
Lincoln LS Technical Service Bulletins (TSB)
TSB 05-21-8 – Delayed or harsh reverse engagement – 5R55S Transmission
2004 – 2005 Ford Explorer – 2004 – 2005 Ford Thunderbird – 2004 – 2005 Lincoln LS – 2004 – 2005 Lincoln Aviator – 2004 – 2005 Mercury Mountaineer
Problem – Some vehicles may experience a delayed or harsh reverse gear engagement due to improper pressure control
Solution – It may be necessary to place the solenoid body assembly, valve body and/or an in-line filter
Common Problems with the Lincoln LS Transmission
Lack of Response
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
No 3rd or 4th Gear
No 1st or 2nd Gear
Trouble Codes / Check Engine Light
Can I drive with a transmission problem?
If your Lincoln LS can still make it up and down the road, you might say “It’s fine, I’ll just drive it until I can get it fixed”. But that is not always a good idea, depending on the symptoms. You see, there are a lot of (very expensive) moving parts inside of a transmission, and if something isn’t right, continuing to drive with a transmission problem could damage something else.
How often does a Lincoln LS transmission need to be replaced?
The overall lifespan of a Lincoln LS transmission largely depends on how well it was maintained. Factory design flaws also factor into this equation, along with how/how hard you drive. But on average, we’ve seen the Lincoln LS transmission last for between 130,000-180,000 miles. A high quality replacement transmission however, can last considerably longer if all of the factory design flaws have been addressed and the vehicle has been maintained.
How are Lincoln LS transmission issues diagnosed?
It is fairly easy to guesstimate what the root cause of your Lincoln LS transmission problems might be, but you won’t truly know unless you have the right tools and experience. A good mechanic or transmission repair center will be able to connect your truck to a computer and find out which diagnostic trouble codes (DTC’s) have been stored. Once they know what to look for, they can perform a visual inspection to verify the problem.
How is a Lincoln LS transmission replaced?
In order to replace your Lincoln LS transmission, the truck has to be lifted from the ground in order to gain access to all of the parts that will need to be unbolted. Then the transmission can be lowered to the ground (typically with a transmission jack), so the new transmission can be installed. Once it is in place, for the 6L80, the vehicle PCM will have to be reprogrammed / reflashed to accept the new transmission using the latest GM subscription.
Recommendations for Lincoln LS transmission issues?
To save time and get back on the road faster, have your 17-digit truck VIN# handy and you can get an online quote for a reman Lincoln LS transmission here, then find a local shop using our Find a Shop guide to install it for you.
How to Solve Lincoln LS Transmission Problems
Solution A: Buy a Used Lincoln LS Transmission
The quickest way to fix your transmission problems is to simply buy a used transmission or used transmission. These can be found at most junk yards, and they often come with a 30-90 day warranty. However, there’s no way to determine the actual condition of the internal components, so you could be spending a bunch of money to have the exact same problems. Plus, that warranty only covers the transmission if it’s defective, not the labor costs that you’ll have to pay.
Solution B: Buy a Rebuilt Lincoln LS Transmission
Another option would be a rebuilt transmission or rebuilt transmission. A local repair shop will remove your transmission, then install a bunch of new parts during the rebuild. The problem here is, the skills and experience of each transmission rebuilder will vary widely from shop to shop, so you could have problems from something that wasn’t adjusted properly. And the 1-2 year warranty might only cover you at certain transmission repair shops, in a specific geographical area.
Solution C: Buy a Remanufactured Lincoln LS Transmission
Many owners depend on their vehicle to commute and get things done. Their gasoline engines are designed to go 100’s of thousands of miles, so it makes sense to invest in a remanufactured transmission.
What Problem Does Your Lincoln LS Have?
Let us know the year, mileage and problem you’re having as well as any trouble (OBD) codes you’ve found. If you’ve been given a quote or paid for a repair, we’d like to hear about that too!