20 Most Recent 2008 Volvo S80 - Page 4 Questions & Answers

connect jump leads to starter motor large terminal and engine earth then the button should open the boot .

Its just a tail light not the repeater bulb check all bulbs you can turn the car on and just pull out the bulb holder and see which one is out have someone push on the brakes also and put the car in reverse. Also sometime the connections that the bulbs go in need cleaned. If you clean it just remove the whole holder just by squeezing the connector that hooks into the holder. This is a common issue. But more then likely it just the bulb.

Link below is a list of OBD fault codes. http://www.totalcardiagnostics.com/support/Knowledgebase/Article/View/21/0/genericmanufacturer-obd2-codes-and-their-meanings I don't think the codes are directly related to the work on the brakes.

Not a Volvo expert but sound like a faulty relay.

Which fan motor do you want to repair, the one inside the car for climate control or outside for engine cooling next to radiator? Inside locate fan please note some libraries have repair manuals that you can check with them for free you usually can go and find at least the location this way. Check fuse location and electrically check BOTH SIDES of the fuse with a digital volt meter not a test light some circuits in newer computer control vehicles can be damaged by test lights. Once you find the fan (inside) it also has a resister pack usually somewhere on the a/c heater assembly, check for voltage at the input of the motor AND the ground side also remember electricity needs a complete circuit.
If outside cooling motor look for a fuse box outside in the engine compartment and check that also inspect the wiring connections in line for melting usually at the motor this is a tell tale sign that the motor is using too much current. Also there needs to be a temperature switch in the cooling system sometimes in the radiator or in the engine/block/head. watch the color code of the wire from motor trace back usually to a relay or two speed resister block. Also some cars have a secondary fan for the A/C condenser I assume you don't mean this one.

042 is brake position sensor code. That sensor is used primarily to cancel the cruise control but may also be used for abs, if your car is equipped. Can you get an odb scan to see why the check engine light is on? The engine light does not indicate oil changes, so something else is wrong. We need that code, which starts with P and has four digits after the P.

have the fault codes read guessing at the problem is costly and a waste of time

1500 lbs would b a safe weight

I'm fairly certain it's your turn signal stalk. Do the hazard lights flash?

Under the hood in the fuse box.

In my experience it is the drivers door lock actuator at fault. This is also a part of the door clasp that holds the door shut. Likely the motor or thermal fuse inside this has failed. It's not overly expensive as a replacement item. Looking at between $45-$115 depending on where you purchase it.