Can not get car to rise or lower car sits on wheels

best done with the weight on the vehicle remove the bolts going through the arm insulators and remove the arm. do one side at a time and try not to move the wheel. Lower trailing arms may have an washer on the bolts that is off set for alignment purposes so be careful as to where the washers are sitting or you will need a rear wheel alignment when finished.

change your engine coolant temperature sensor

there are more than one temp sending units cheak the raidiator sending unit.

I dont know how much it would cost but it sounds like you have a suspension issue. Shocks and springs could be shot. I would suggest having an auto mechanic look at it.

SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS. MAKE VECHICLE SITTING ON LEVEL SOLID GROUND. REMOVE FRONT WHEELS , REMOVE HEAT SHIELD, IF EQUIPPED WITH 15 INCH WHEELS, REMOVE BALL JOINT CLAMP NUT, REMOVE SWAY BAR TO CONTROL ARM BOLTS, REMOVE STRUT CLEVIS FROM THE LOWER CONTROL ARM, REMOVE SWAY BAR TO CROSSMEMBER BOLTS LOOSEN THEM AND ROTATE THE SWAY BAR AWAY FROM THE CONTROL ARM, LOWER CONTROL ARM FROM STEERING KNUCKLE. REMOVE BOTH LOWER CONTROL ARM BOLTS. REMOVE CONTROL ARM. DURING INSTALLATION TORQUE LOWER CONTROL ARM BOLTS 120 FT LBS. CONTROL ARM STEERING KNUCLE TORQUE NUT 70 FT LBS.TORQUE SWAY BAR BOLTS 21 FT LBS.

This vehicle has a air ride suspension option which can read the height of the vehicle, when weight is added the suspension will compensate by appling air to the front and rear shocks. When weight reduced it will lower by venting air from the shocks. If the entire vehicle sits low there is a problem with the air compressor circuit (quite often water in the system and freezes causing damage to the compressor). In your case if only one side is low, check the front and rear shocks, the lowest wheel probably has a leaking shock and can't rise.

sounds like a collapsed shock... or maybe a broken coil spring... Look for a break in the spring that sags lowest...

Broken lower ball joint

As long as the temperature isn't spiking and the fan is turning on. It is normal for the temperature to rise to halfway on the gauge and then for the radiator fan to kick on. Sitting in traffic will normally do this.

1. Hand Brake ON , loosen wheel bolts to hand tight, jack up front wheel , chock back wheels , put axle stands/blocks in place (just in case) .

2. Remove wheel. Disconnect pad wear wire , it pulls out of the connector.

3. Remove lower caliper bolt (at the back of caliper at the bottom) , need a 13mm ring spanner for head of bolt and 17mm to stop it spinning

4. Use a screw driver between the back of the outer pad and the caliper to prise the caliper back away from the back of outer pad. Pivot caliper upwards to rest on top of wheel disc (good idea to tie it up with some wire) .

5. Remove and discard old pads , clean out with wire brush and soft brush , don't breath in to much of the dust its nasty.

6. Fit new pads (remember pad wear sensor on inside pad), make sure that the pads are in contact with the disc , and the top of them sitting flush with the rim of the disc, don't force them into this position they should naturally sit there.

7. Lower caliper down into position, you may need to push back the piston further in order to make room for the new pads , do this with you hands or a small piece of timber. Keep an eye on the brake fluid resivoir , your pushing fluid back in so if its over full it may spill over. Refit lower caliper bolt (Renault say to replace this each time), and tigthen. Reconect pad wear sensor.

8. Pump brake pedal until normal brake pressure returns.

9. Remove axle stand/blocks , refit wheel and bolts , lower jack and tighten up wheel bolts.