2008 Sirion possible battery issue

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Hi all!

Looking to get some help/advise please.

My girlfriend has a 2008 Sirion which she recently inherited. Up until now there hasn't really been any issues with the car but last month the exhaust was replaced and now the car won't start. Went to use the car on Saturday and it was completely dead (didn't turn over, or make any noise. Dash did not light up.) Nothing in the car was turning on and the central lock stopped working so I guess it's the battery.

Attempted to jump start it using my car and after a few minutes I noticed the red light on the dash began to blink. Waited for about 10 mins with the jump leads attached and then attempted to start the car, this time the dash lit up but the engine still doesn't start and after a few attempts the power seems to go again and we're back to square one.

The battery it's self doesn't look that old which is what worries me, there is also no paper work to say when this battery was fitted however it has '11/07/17' written on the battery and interestingly there is paperwork for everything else including the last battery which was replaced in 2013. I did notice the terminals had huge lumps of grease on them which I'm thinking was put on there to stop corrosion? I removed a bit of the grease and tried again with the jump leads in for an hour, again got a little more signs of life (the stereo came on which I promptly turned off) but the engine still didn't start.

Am I right by thinking if it was the alternator I'd still be able to jump start the car? If anyone has any advise they could offer, I'd be very grateful.

Thanks in advance!

Wont Start. !!

Does the car turn over when you attempt to start it? So if it is turning over but not starting it could be the immobiliser system is not turned off. Make sure you have a completely full battery charge. Then try the buttons to lock and unlock the car - Do NOT use the key to open the door. When you are sure the fob has opened the doors - Try to start the car again and see if that has cleared it ok. If the car isn't even turning over then you need to make sure the battery is fully charged before you try anything else. If it still wont turn over then it is either the starter motor the battery itself or the alternator not charging. Either way you need to get it started. Then take it to a garage and have the battery and charging system checked. I hope this helps. Smile I have sent you a message - please read it. Smile

2003 Sirion Rally 4. And I love it.
Don't like the new shape Sirion much.Sorry.