20 Most Recent 2005 Volvo S40 Questions & Answers

Some ignition system locks will not release the key unless you push in towards the column while turning further off. It is a safety device to stop in advertent removal of the key while moving. Try that first.

2005 Volvo S40 | Answered on Nov 21, 2019

There is an option in the car's computer to change the display language. You will need an ODBII scanner to do this however. Alternately you can take it yo your dealer and they will be $ happy to $ do this $ for you.$$$

2005 Volvo S40 | Answered on Jun 26, 2019

You can find vacuum leaks with something smoking, such as a cigar or a sage bundle or a can of carb cleaner will sometimes help you locate the leak.

2005 Volvo S40 | Answered on Feb 09, 2019

Sounds like a bad ac compressor

2005 Volvo S40 | Answered on Aug 15, 2018

A problem I had with my 2003 BMW was that the wiring near the trunk hinge that feeds the lock mechanism had been bent back and forth enough times (I open my trunk several times a day) that some of the wires broke. The only way I could get in the trunk was by the mechanical key. The fob and the button release in the cabin did not work. I was able to access enough wiring before and after the hinge area to do a continuity check on the wires and at least a quarter of them had broken. Later I realized that the third center brake light (which is on the trunk lid) was out too. After some patience of unraveling all the wiring I was able to reconnect everything ... but it took several hours....
In your case I do not understand that your latch will not open. Usually if it is set in the lock position when open ... you can stick a screw driver in the mechanism and rotate back the engaging hook which then stays in the open position until you close the trunk again.
If that is not the case with yours, then the mechanism may indeed be toast.

2005 Volvo S40 | Answered on Jan 20, 2018

Here is what one other owner had to do at a dealer, read through it and take it from there, and yes the pressure switch will cause this problem.
I have received the same error codes as all of you, t P0090 (Fuel Pressure Regulator 1 Control Circuit) and P0190 (Fuel Rail pressure sensor circuit malfunction). Same symptoms.
I've had the fuel pressure checked, valves, changed the spark plugs (by the dealership), software upgrade, cleaned the battery terminals, ran heet through the engine about twice, and .... nothing.

The dealership couldn't figure it out either. Eventually they came to the conclusion that it was a corroded battery cable, that they would graciously change for $800. ... so, I didn't do it, because I seriously doubt its the battery cables.

In the winter it had trouble starting as well, and would flood, I had to unplug the injectors sometimes to get it started.

I really can't think of anything else, i'll clean the throttle body this weekend, and start running on premium to see if it makes a difference.

If the dealership can't figure it out, you know its a mystery. I'm starting to wonder if its a computer problem.

2005 Volvo S40 | Answered on Jan 11, 2018

Hi your air injector pump is noisy as they get old they make more sound .if functions are not correct you will have throttle issues if your vehicle runs good I would put up with sound issue could last long making noise .expensive part to replace

2005 Volvo S40 | Answered on Dec 26, 2017

sounds like the doors that open and close that direct the air are jammed, or are not receiving a signal. Have someone run a code check which should tell you. May just need to have a faulty code erased or...$$$ repair by Volvo.

2005 Volvo S40 | Answered on Dec 05, 2017

Thanks for letting me know. Have a good one.

2005 Volvo S40 | Answered on Nov 27, 2017

Pull the codes with a obd2 scan tool and see what faults are stored in the system computer. After that you will hopefully have a better idea of what you are dealing with and can focus your repairs more easily.

2005 Volvo S40 | Answered on Oct 28, 2017

Get somebody who has a diagnostic scanner... OBD .. to connect it to your car and see if there are any error codes.

It's possible that a sensor has failed

2005 Volvo S40 | Answered on Oct 14, 2017

We don't have the 1.8 engine here, but the diagram for the 2.4 engine is at the link below. They should be similar.

2005 Volvo S40 | Answered on Sep 15, 2017

This occurred to me the other day. They thought it was the alternator and battery, but nothing. What was the problem with her car. Please help, I'm going nuts trying to figure this out!

2005 Volvo S40 | Answered on Aug 03, 2017

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