Whatdo they mean enter the characters as they are given in the challenge.

Hi, my car radio is off ( Mitsubishi challenger 2004) I've got a code, but cannot enter it because the car radio is off. I already unplugged the battery to reset the system but still not working. Anyone know how to unlock it, without a code ?
thanks

Montero or Challenger? Both on the drivers side of the transmission. Big black switch under where the shifter cable goes to the transmission. Under the vehicle.

Check fuel pressure with a gauge on the motor
Check volumn as well

See if the fuel pressure holds KO/EO

Your Owners Manual will tell you

Helm.Com ---to buy eo owners manual,
that came with the car

You should have gotten any codes you have & given them to us
Then you will be pointed to a system at least

I don't know what that code means, but on my mom's Lazy Boy, it stopped working and I had to replace the two 9volt backup batteries on the power cube/wall plug.

Hood latch or cable is frozen up (rusted). These can be a challenge to get fixed, because you don't have access. You can try to see if you have access through the front grille or go under the car and look up for the latch. Hopefully you can get to the latch and release it. My worst one was a mid 70s Corvette with the latch by the windshield (hood opens forward). This latch was above the cowl assembly and you had to work around the engine. Good luck...

EGR , that stands for Exhaust Gas Recirculation. As the name suggests, this valve is responsible for sending the air back in to the combustion chamber. This exhausted air is much warmer than the incoming air, thus it helps the engine in starting up quickly because the and the air does not need to be heated up as it is already warmed by the valve. This causes of the car to work efficiently and smoothly.

How to read a VIN
1st character- Identifies the country in which the vehicle was manufactured.
For example: U.S.A.(1or 4), Canada(2), Mexico(3), Japan(J), Korea(K), England(S), Germany(W), Italy(Z)
2nd character- Identifies the manufacturer. For example; Audi(A),
BMW(B), Buick(4), Cadillac(6), Chevrolet(1), Chrysler(C), Dodge(B),
Ford(F), GM Canada(7), General Motors(G), Honda(H), Jaquar(A), Lincoln(L), Mercedes Benz(D), Mercury(M), Nissan(N), Oldsmobile(3), Pontiac(2or5), Plymouth(P), Saturn(8), Toyota(T), VW(V), Volvo(V).
3rd character- Identifies vehicle type or manufacturing division.
4th to 8th characters- VDS - Vehicle Descriptor Section. These 5 characters occupy positions 4 through 8 of the VIN and may be used by the manufacturer to identify attributes of the vehicle. Identifies vehicle features such as body style, engine type, model, series, etc.
9th Character - The check digit "character or digit 9" in the sequence of a vehicle identification number (VIN) built beginning with model year 1981 (when the 17 character digit format was established) can best be described as identifying the VIN accuracy.
A check digit shall be part of each vin (since 1981) and shall appear in position
nine (9) of the VIN on the vehicle and on any transfer documents containing
the vin prepared by the manufacturer to be given to the first owner for purposes
other than resale. Thus, the VINs of any two vehicles manufactured within a 30
year period shall not be identical. The check digit means a single number or letter
"x" used to verify the accuracy of the transcription of the vehicle identification
number.
After all other characters in the VIN have been determined by the manufacturer
the check digit is calculated by carrying out a mathematical computation
specified. This is based on vin position, sample vin, assigned value code,
weight factor and multiply assigned value times weight factors. The values are added and the total is divided by 11. The remainder is the check digit number.
The correct numeric remainder - zero through nine (0-9) will appear.
However, if the remainder is 10 the letter "X" is used to designate the check
digit value/number.
10th character- Identifies the model year. For example: 1988(J), 1989(K), 1990(L), 1991(M), 1992(N), 1993(P), 1994(R), 1995(S), 1996(T),
1997(V), 1998(W), 1999(X), 2000(Y)------2001(1), 2002(2), 2003(3)
11th character- Identifies the assembly plant for the vehicle.
12th to 17th characters- VIS - Vehicle Identifier Section. The last 8 characters of the VIN are used for the identification a of specific vehicle. The last four characters shall always be numeric. Identifies the sequence of the vehicle for production as it rolled off the manufacturers assembly line.

Vehicle Identification Numbers (VINs) are used to uniquely identify motor vehicles. Prior to 1980 there was not an accepted standard for these numbers, so different manufacturers used different formats. Modern day VINs consist of 17 characters that do not include the letters I, O or Q.

It's all in the VIN.

A car’s vehicle identification number (VIN) is the automotive equivalent of
human "DNA".

How to read a VIN
1st character- Identifies the country in which the vehicle was manufactured.
For example: U.S.A.(1or 4), Canada(2), Mexico(3), Japan(J), Korea(K), England(S), Germany(W), Italy(Z)
2nd character- Identifies the manufacturer. For example; Audi(A),
BMW(B), Buick(4), Cadillac(6), Chevrolet(1), Chrysler(C), Dodge(B),
Ford(F), GM Canada(7), General Motors(G), Honda(H), Jaquar(A), Lincoln(L), Mercedes Benz(D), Mercury(M), Nissan(N), Oldsmobile(3), Pontiac(2or5), Plymouth(P), Saturn(8), Toyota(T), VW(V), Volvo(V).
3rd character- Identifies vehicle type or manufacturing division.
4th to 8th characters- VDS - Vehicle Descriptor Section. These 5 characters occupy positions 4 through 8 of the VIN and may be used by the manufacturer to identify attributes of the vehicle. Identifies vehicle features such as body style, engine type, model, series, etc.
9th Character - The check digit "character or digit 9" in the sequence of a vehicle identification number (VIN) built beginning with model year 1981 (when the 17 character digit format was established) can best be described as identifying the VIN accuracy.
A check digit shall be part of each vin (since 1981) and shall appear in position
nine (9) of the VIN on the vehicle and on any transfer documents containing
the vin prepared by the manufacturer to be given to the first owner for purposes
other than resale. Thus, the vins of any two vehicles manufactured within a 30
year period shall not be identical. The check digit means a single number or letter
"x" used to verify the accuracy of the transcription of the vehicle identification
number.
After all other characters in the VIN have been determined by the manufacturer
the check digit is calculated by carrying out a mathematical computation
specified. This is based on vin position, sample vin, assigned value code,
weight factor and multiply assigned value times weight factors. The values are added and the total is divided by 11. The remainder is the check digit number.
The correct numeric remainder - zero through nine (0-9) will appear.
However, if the remainder is 10 the letter "X" is used to designate the check
digit value/number.
10th character- Identifies the model year. For example: 1988(J), 1989(K), 1990(L), 1991(M), 1992(N), 1993(P), 1994(R), 1995(S), 1996(T),
1997(V), 1998(W), 1999(X), 2000(Y)------2001(1), 2002(2), 2003(3)
11th character- Identifies the assembly plant for the vehicle.
12th to 17th characters- VIS - Vehicle Identifier Section. The last 8 characters of the VIN are used for the identification a of specific vehicle. The last four characters shall always be numeric. Identifies the sequence of the vehicle for production as it rolled off the manufacturers assembly line.

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u can vist auto zone .com for more info here to help Shaun

Before any service is performed, carefully check the following:

• Be sure the vehicle is properly centered and secured on stands or a hoist.
• If the vehicle has antilock brakes, depressurize the system according to the procedures given in the service manual.
• Disconnect the battery ground cable.
• Front brake pad replacement begins with removing brake fluid from the master cylinder reservoir. If this is not done, the fluid could overflow and spill when the pistons are forced back into the caliper bore, possibly damaging the painted surfaces.
• Replace the cover.
• Discard old brake fluid.

• Raise the car. Make sure it is safely positioned on the lift.
• If you don't have a lift, use a jack and jack stands.
• A handle on the jack is moved up and down to raise part of a vehicle and a valve is turned to release the hydraulic pressure in the jack to lower the part. At the end of the jack is a lifting pad.
• The pad must be positioned under an area of the vehicle's frame or at one of the manufacturer's recommended lift points.
• Never place the pad under the floorpan or under steering and suspension components, because they can easily be damaged by the weight of the vehicle.
• Always position the jack so that the wheels of the vehicle can roll as the vehicle is being raised.
• Never use a lift or jack to move something heavier than it is designed for. Always check the rating before using a lift or jack. If a jack is rated for 2 tons, do not attempt to use it for a job that requires a 5-ton jack. It is dangerous for you and the vehicle.
• Safety stands, also called jack stands, are supports of various heights that sit on the floor. They are placed under a sturdy chassis member, such as the frame or axle housing, to support the vehicle.
• Once the safety stands are in position, the hydraulic pressure in the jack should be slowly released until the weight of the vehicle is on the stands. Like jacks, jack stands also have a capacity rating. Always use the correct rating of jack stand.
• Never move under a vehicle when it is supported by only a hydraulic jack. Rest the vehicle on the safety stands before moving under the vehicle.
• The jack should be removed after the jack stands are set in place.
• This eliminates a hazard, such as a jack handle sticking out into a walkway. A jack handle that is bumped or kicked can cause a tripping accident or cause the vehicle to fall.
• If you use support stands on asphalt, put a piece of thick plywood or a steel plate under the stands.
• Remove its wheel assemblies.

• Inspect the brake assembly.
• Look for signs of fluid leaks, broken or cracked lines, or a damaged break rotor. If a problem is found, correct it before installing the new brake pads.

• Loosen the bolts and remove the pad locator pins.
• During servicing, grease, oil, brake fluid, or any other foreign material must be kept off the brake linings, caliper, surfaces of the disc, and external surfaces of the hub. Handle the brake disc and caliper in such a way as to avoid deformation of the disc and nicking or scratching of the brake linings.
  
  
  
• Lift and rotate the caliper assembly from the rotor.

• Remove the brake pads from the caliper assembly.

• Fasten a piece of wire to the car's frame and support the caliper with the wire.
• When a hydraulic hose is disconnected, plug it to prevent any foreign material from entering.

• Check the condition of the locating pin insulators and sleeves.

Art courtesy of Delmar - Thomson Learning.

• Place a piece of wood over the caliper's piston and install a C-clamp over the wood and caliper.
• Tighten the clamp to force the piston back into its bore.