Top 10 2002 Volvo S60 Questions & Answers

Take it one step at a time. First, replace the coolant sensor and try to get the car to start WITH the sensor connected. Make sure that you DO NOT use any teflon tape when installing the switch (this will isolate the switch which will not ground it, making it not work). Th computer receives signals from numerous sensors, and makes adjustments according to inputs received. When the computer gets a signal that the car is still cold, it will adjust the fuel/air ratio to make it run richer (more fuel than air). Once the car is running it will run rough due to a improper mixture since the computer is never sensing the car is warmed up since the sensor is unplugged. This will also account for the slow start due to a richer fuel mixture.

Make sure that you have the transmission software updated. Volvo has had many upgrades on their transmission's control software to address these exact symptoms.

Bret
RepairPal.com

i had the same problem with my dash saying battery voltage low and the problem was my alternator. took it to the dealership and it cost me $400.00 to replace a connector on the alternator because for my year car a (2002) they don't replace entire alternator.

Brake lights and cruise control are not set properly.
Easy check - are your brake lights coming on with just the usual light touch of the pedal? If not, then the microswitch that senses that your foot is on the brake needs to be adjusted or replaced.

on each headlamp assembly, there will be either one or two plastic nuts that you can turn.

If you only have one nut on each, that will adjust the vertical aim of the headlights.

If you have two nuts on each, one will adjust the vertical and the other will adjust the horizontal.

Park your car on a level ground 30 feet from a wall and measure the height from the ground to the bulb and mark on a wall (do this for highs beams and low beams if the bulbs are separate, if highs and lows are the same bulb, only do it for the lows)

If the headlights read VOR, then aim the brightest part or cutoff part just below the mark on the wall. If it says VOL or nothing, aim them 2 inches below the mark on the wall.

the battery is located in the trunk underneath the floor. there should be a handle on the floor and you lift it up to get to the battery. there is a positive battery cable post under the hood near the driver side strut mount, next to the fuse box.

Hello,

This should be fairly simple,one may have to remove the grille.

• Remove trimmings on the front bumper cover to allow access to the bolt for removal of the front bumper. The trimming can be removed simply by prying the trimming from the center of the bumper cover using a Philips screw driver.
• After removing the 2 bolts on the bumper cover, you may open the hood and remove the plastic fasteners on the top of the bumper.
• To remove the plastic fastener, simply depress the center until click. Do not press too far or the fastener will be damaged.
• Turn the Torx screw in the wheel well counter clockwise to loosen the catch plate on the bumper. Lift the bumper cover over the catch plate and push the bumper cover forward. This completes the removal of the front bumper cover.
• To remove the headlight assembly, you will need to loosen the bolt on the retainer near the wheel well. You will then remove the 4 bolts that hold the headlight assembly.
• There is one bolt on the side of the headlight assembly. Two bolts on top and one at the corner of the lens. They all have the same size bolt.
• In order to remove the headlight assembly, after removing the bolts, the headlight harness needs to be removed.
• The next step is to remove the trimming on the lens and removing the clips that hold the lens in place. There are 4 clips. One clips on each side.
• Once the clips are removed, the lens can be pry open with screw driver. You may want to heat the edge to soften the glue or use an utility knife to scrape the edge. Be extra careful, as the glass can be very sharp if shattered. Please also wear protective gear such as safety goggle and gloves. After this, just reverse the steps to put the headlight back together.
  

P0420 isnt a misfiring code; this code P0420 is refer at Catalyst System Efficiency Below Threshold (Bank 1).

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P0785: Shift/Timing Solenoid Malfunction

- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness or connectors
- Shifting solenoid valve circuit is open or shorted

I had this problem on my 02 s60 after messing with the battery. The problem is that the computer is stupid and "forgets" how to manage the car if it completely loses power.

To retrain it you basically just drive the car. I've seen several sets of instructions but here's what works for me:

1. Start the car and let it idle until warmed up.
2. Using moderate throttle (don't floor it) get the car up to highway speeds.
3. Slow down to a complete stop.
4. Repeat 2-3 a few times if you're so inclined.
5. Done!

Skipping the highway part will work too, however, I've heard it can take much longer to retrain the computer (weeks to months depending on driving habits.)