S60 2005 t5 chack brake light and turn signal problem

Nadavboblil · May 19th, 2020, 16:16

Hi guys i have a problem with my s60. "Check Brake light"

The center LED brake light is always on and my back brake lights is not turned on no matter what I've tried.
The turn signal is allso not working inc the Hazzard
When i pressed the Hazzard you can see on the dash the 2 green arrows light up but no light on the outside.

Thanks for your help!

gelertd · May 22nd, 2020, 21:22

Your model year could have the CEM that is affected by water ingress.

Water ingress into the CEM results in a number of bizarre electrical issues including problems with brake light activation.

Volvo want around £1000 for a new CEM - but they can be repaired (as mine was) for £150.

My experience is detailed here...…………..

https://www.volvoforums.org.uk/showthread.php?t=278908

VOLVOBOY · May 24th, 2020, 10:07

Hi.
The s60 brake wiring is slightly different to the v70.
The high level brake light is on the same circuit as the ignition lock illumination.
The ignition lock illumination should be off when the car is locked , on when the car is un-locked and off again when the key is in ign. position 2 / engine running. You need to check this.
The brake lights have either 1 or 2 relays in the REM depending on model year. There are shunts also. These could be faulty.
The brake pedal switch could be out of position / broken. You need to check this.
There could be a short , poor connection or broken wire in the circuit.
The centre hazard warning flasher is on a different circuit to the main indicators. It is connected directly to the CEM.
The fault could be in the indicator arm switch , poor wiring or blown fuses.
Also it`s well worth checking the CEM for any sign of water ingress as in previous post.

May 19th, 2020, 16:16	#1
Nadavboblil New Member Last Online: Oct 16th, 2020 20:44 Join Date: May 2020 Location: Marbel	S60 2005 t5 chack brake light and turn signal problem Hi guys i have a problem with my s60. "Check Brake light" The center LED brake light is always on and my back brake lights is not turned on no matter what I've tried. The turn signal is allso not working inc the Hazzard When i pressed the Hazzard you can see on the dash the 2 green arrows light up but no light on the outside. Thanks for your help!

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May 22nd, 2020, 21:22	#2
gelertd Junior Member Last Online: Mar 26th, 2024 22:55 Join Date: Jul 2009 Location: East Yorkshire	Your model year could have the CEM that is affected by water ingress. Water ingress into the CEM results in a number of bizarre electrical issues including problems with brake light activation. Volvo want around £1000 for a new CEM - but they can be repaired (as mine was) for £150. My experience is detailed here...………….. https://www.volvoforums.org.uk/showthread.php?t=278908

May 24th, 2020, 10:07	#3
VOLVOBOY Lazy Member Last Online: Yesterday 21:50 Join Date: Mar 2007 Location: HORLEY	Hi. The s60 brake wiring is slightly different to the v70. The high level brake light is on the same circuit as the ignition lock illumination. The ignition lock illumination should be off when the car is locked , on when the car is un-locked and off again when the key is in ign. position 2 / engine running. You need to check this. The brake lights have either 1 or 2 relays in the REM depending on model year. There are shunts also. These could be faulty. The brake pedal switch could be out of position / broken. You need to check this. There could be a short , poor connection or broken wire in the circuit. The centre hazard warning flasher is on a different circuit to the main indicators. It is connected directly to the CEM. The fault could be in the indicator arm switch , poor wiring or blown fuses. Also it`s well worth checking the CEM for any sign of water ingress as in previous post.

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