Hyundai was stuck in sand & i hooked onto a part beneath left rear wheel & now rear wheel is off alignment.

Steering wheel will have to be removed and then replace the "Turn Signal Switch Assembly" under the steering wheel. Disconnect battery first before removing Steering Wheel.

Hey Bob, how's it going ? The two big ones there with the 125 amp fuse or breaker , they go to the rear fuse block ,that's power supply ! power supply for trailer hook-up comes from rear fuse box. The other wire supply's the body control module ! 42 TR PARK Fuse 10A Trailer Connector .
Fuse Block - Rear
Beneath the left rear seat

On these LH body cars, camber is not adjustable. Neither is caster. Those angles are preset by the suspension geometry. However, specifications for them ARE published. Generally, if either of those two parameters are out of spec, then it's likely something is worn or damaged and needs to be replaced.

The only adjustable parameters are to the front and rear toe but specified as "Total Toe" - see note below.
The alignment specs are as follows ...

ALIGNMENT SPECIFICATIONS AT VEHICLE CURB HEIGHT
A. FRONT WHEELS

1. CAMBER
   Acceptable -0.6° to +0.6°
   Preferred +0.0°
   Side to Side Differential
   Acceptable 0.7° or less
   Preferred 0.0°
2. TOTAL TOE - Specified in degrees. See Note Below
   Acceptable 0.4° in -to- 0.0° out
   Preferred 0.2° in
3. CASTER* (reference angle)
   Acceptable +2.0° -to- +4.0°
   Preferred +3.0°
   *Side to Side Caster Difference not to exceed
   Acceptable 1.0° or less
   Preferred 0.0°

B. REAR WHEELS

1. CAMBER
   Acceptable -0.6° -to- +0.4°
   Preferred +0.1°
2. TOTAL TOE** - Specified in degrees. See Note Below.
   Acceptable 0.2° out -to- 0.4° in
   Preferred -0.1° in
   **TOE OUT when backed onto alignment rack is TOE IN when driving.
3. THRUST ANGLE
   Acceptable -0.15° -to- +0.15°

Note: "Total Toe" is the arithmetic sum of the left and right Toe settings. Positive is Toe-in. Negative is Toe-out. Total Toe must be equally split between left and right wheels. Left and Right Toe must be equal to within 0.02° (2 one hundredths of a degree).

Courtesy RJK & Concorde Shop Manual

When you said you had several alignments, where they just front wheel alignments, or all four wheel alignments?

Sometimes, the rear can get out of alignment, also.

rear wheel alignment should always be done before a front end alignment as it affects the front end settings. Get onto a good wheel aligner and tell him that you want the rear end aligned first as most ignore that bit as it takes time and you are being charged for it but it is profit if they skip it because you do not know about it or do not insist on it.

Most FWD vehicles can have a four wheel alignment performed. A 2 wheel alignment is mainly for vehicles that are rear wheel drive. There are exceptions but the 2000 Mercury Cougar is a 4 wheel alignment.

here are the reasons, rear wheel alignmemt is way off, (yes the rear is aligned on modern cars) tires are not inflated to spec, worn rear suspension parts, alignment is the most common reason

Wheel & Tire
Wheel alignment
Front
Rear
Dimension
Toe-in
Camber
Caster angle(to ground))
King pin angle
King pin offset mm(in.)
Side slip mm(in.)
P215/65R16
0°±0.2°
0°±0.5°
3.53°±0.5°
12.77°±0.5°
-9.73(0.383)
±3(0.118)
P235/60R16
0°±0.2°
0°±0.5°
3.53°±0.5°
12.77°´±0.5°
-10.41(0.410)
±3(0.118)
P215/65R16
0.37° ~ 0.41°
-0.92°±0.5°
─
─
─
±3
P235/60R16
0.37° ~ 0.41°
-0.92°±0.5°
─
─
─
±3
Wheel
Size
Run out mm(in.)
AL wheel
6.5JX16
Radial : 0.3(0.01), Lateral : 0.3(0.01)
Tire
Size
Inflation pressure kg/cm² (psi)
P215/65R16, P235/60R16
2.1±0.07(30+1.0)

Check wheel alignment and suspension system components. You'll need to seek a professional in alignment procedures for this one and the equipment necessary to complete it. Hyundai Service Centers are equipped with all the special tools/equipment to do this. It could simply be negative (-) front toe, or a combination of Camber and Caster measurements (cross Camber) adjustments. Hyundai Parts department stocks (or can order) Camber kits & Service can install them if this is where the problem is.

Sounds like an alignment issue. I suggest taking it to a alignment shop for further diagnoses.