20 Most Recent 2004 Volvo S40 - Page 2 Questions & Answers

Most have a recessed allen screw, or star-key nut located on the back side of the knob...some are hidden by a clip on cover...look for at the base of the knob design...

There could be various reasons why it is being set off. It could be a faulty shock sensor, or you could have a battery drain while car is off. Alarms check for voltage changes while engaged. (That would mean you have an electrical problem) . the battery voltage may be too low. (Or a bad battery/charging circuit)or the alarm itself is malfunctiong.

theres a tiny gasket around the line, like the size of a 1/2 of a bic lighter i bet its compromised

Hi,

Do the following to clear out the service message 1. Press and hold trip odometer reset button
2. Turn ignition key to run position KPII (not the start position)
3. Wait 30 seconds or until service light begins blinking
4. Release Trip Odometer button
5. Turn ignition to off position

Thank you !!

Fish your ground wire down to the driver's side underneath the dash. There you will find all sorts of metal connections to the frame. Just loosen a screw or nut, and slide the wire and connector underneath and tighten. Look around the fuse box, there should also be a ground connection somewhere there. You can also splice or tap into an existing ground wire.

After you repair the fault causing the code you will need a scan tool capable of erasing the fault code. If it keeps coming back after that you have not repaired the problem. There is no other way to clear the code except a scan tool

Under the black plastic cover on the top of the engine. Take that off then take the coils off and you will see the spark plugs.

under the wiper arms is a big cover ,lift the bonnet and look at the back behind the firewall and where the wiper motor is and either side of the vehicle is a well and in the bottom is a drain hole ,look and find then make sure these holes are clear so any water can run out

Could be crankshaft sensor or cam.

engine breather blocked look and clean or replace may do the trick

http://www.fixya.com/tags/fault_code_d900/cars/volvo

Fuses are labelled in the fuse block. If not, pull each to check or use test lamp to see if current is present on both sides of fuse.

I had the same problem a few times. When I took my care in to the dealership for normal maintenance & told them of the radio problem they did a software upgrade on the car and that fixed the problem.

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Have you checked for a burned connector at the CEM?

the crank has the only mark you have a procedure for the cam gear you should see if the local dealer will print this out for you