Question about 2001 Volvo S40

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2001 VOLVO S40 Battery light on and all elctronics on the car are cutting in and out when the car is on

I have a 2001 Volvo S40. For over a week now the battery light has been on but the battery has been replaced. I'm still having issues with the battery light being on and now the heater will shut off when you go over 1 RPM and the battery positive cable gets hot while running. I'm now having issues with other stuff in the car that are electronic acting up like the ABS and brake light coming on or the doors locking on their own. The truck will no longer unlock without using the key either. Its like its possessed. HELP!!!!

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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OnlyOneN
  • 86 Answers

SOURCE: 2001 Volvo S40 missing key/remote

You car has an integrated key and remote.

There is a software that needs to be downloaded to the car. When the remote is purchased at the dealer it comes in a plastic package. That plastic package has a sticker on it. The sticker contains id codes.

There are two codes one is 16 digits/letters and the second one is 8 digits/letters.

Without this sticker the dealership can not program the remote/key to the car. If you buy a key elsewhere, make sure it has the codes included.

Unfortunately you cannot program a remote yourself.

Posted on Apr 29, 2009

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Mr BrokRench
  • 1623 Answers

SOURCE: Car won't start

If there is a blinking car icon with an "X" over it. This icon means the Immobilizer has been activated and hence won't allow the car to start. It could be due to a bad SCU, Start Control Unit. The SCU is actually the ignition switch on these cars.
Most of the time it's triggered by the anti-theft system..You can try this trick i learned that the dealers won't tell you...try locking and unlocking of the doors five times with the remote to reset the immobilizer and see if this helps.
Good luck...i hope this helps...please take a minute to rate me a fixya.

Posted on Jul 15, 2009

  • 17 Answers

SOURCE: 1999 Volvo S80 2.9 auto

Try disconnecting both battery terminals and touching them together for about 30 seconds. This will drain capacitors and any stored power in the modules(or computers). When a battery goes dead and modules are deprived of proper voltage they make funny things happen... especially on Volvos. Good Luck

Posted on Aug 12, 2009

  • 1 Answer

SOURCE: 2001 Volvo S40 sensors?

Maybe you have iron debris stuck to the magnetic ABS sensor. behind the hub. Remove the sensor from behind the hub and clean it or remove the whole hub. To remove the hub you need to remove the calliper and rotor, knok off the centre dust cap and undo the 30mm nut and then the hub will slide off and you will see the sensor. When re fitting the hub, toque the nut to 120NM then 30degs more ( that is from Volvo Vadas official instructions).

I've just replaced the hub last night on my 2001 V40.

Posted on Aug 18, 2009

  • 4886 Answers

SOURCE: diconnected battery and don't have the code

Volvo codes are usually readily available for free from your Volvo dealer providing you can quote the VIN and Radio Serial Number

Posted on Sep 01, 2009

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My airbag light came on in my 2001 Volvo S40. I don't know why. And I don't know how to get it off. I am also getting a check engine light.


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