I have a 2003 lincoln aviator that had to be towed because all of the sudden it won't go into reverse or any of the higher gears. AAA did a diagnosis on the truck said it was not the transmission but

SOURCE: transmission 1999 lincoln continental

Transmission model is AX4N.The reason that the car/trans only acts up after long drives is the heat.As metal components heat up,tolerances and clearances that were marginal or borderline before with moderate heat,become excessive clearances when really hot.More than likely there are internal transmission components with excessive wear.Many problematic areas inside the AX4N trans is the pump,where the oil pump driveshaft bearing wears out,the seal is torn,and hydraulic pressure falls off,common failure point in these units.The other areas are typical to all automatic transmissions,the clutch packs and bands wear and lose clearance.as well as some of the bushings inside the unit.I just rebuilt recently a trans exactly identical to your car,V8...4.6Ltr Lincoln,and it had minimal damage inside,but enough to throw the check engine light on with a Torque Convertor Clutch trouble code.The TCC was slipping excessively,and the vehicle computer recognized this,and illuminated the CEL.Chances are good that the damage inside your trans will be minimal,but now is the time to consider rebuilding it and restoring all the hydraulic circuits integrity,and resetting all the clutch pack and band clearances with new clutches,steels,and bands.A remanufactured torque convertor should also be installed along with rebuilding the trans.Be careful as to who does the work on the trans should you decide to rebuild it,as some people's definition of a rebuild doesn't quite qualify as anything more than a patch/repair job.A complete rebuild consists of tearing the trans completely down,loading it into a parts cleaner,and thoroughly cleaning it.From this point,the rebuild begins,including a banner overhaul kit,new steels,bands,seals,thrust washers as required,Electronic Pressure Control solenoid,all new bushings,set clutch pack clearances to factory specifications,along with setting unit endplay,and a remanufactured torque convertor.Good luck.

SOURCE: Lincoln Navigator transmission problem

check and replace filter and fluids just like oil it tends to burn up and blacking and needs to be changed and flushed checking your tranny fluid it should be a red color not a dark red or with a black tint

Ed

• 479 Answers
• Posted on May 05, 2009

SOURCE: keyless entry code for 2003 lincoln aviator

Every car different, call an auto rescue or towing company, the trucks are usually equiped with slim jims, that can be used to gain access to your vehicle.

Hope this helps.
Ed

SOURCE: aviator park assist

check to see if any of the bumper sensors are damaged also make sure the speaker is audible when put in reverse

SOURCE: Need Diagram for 2003 Lincoln Aviator Serpentine Belt

There are 2 possible diagrams depending on if you have a 4.6L SOHC or a 4.6L DOHC. This information should be on the plate under the hood. Best of luck!
Greg

4.6L SOHC




4.6L DOHC