S40 (New) Electrics : - Reversing sensors, intermittent fault? S40 SE Sport 2.0d

Elfed · Jun 12th, 2012, 17:58

I've had an intermittent fault with the reversing sensors on my MY05 S40 SE Sport 2.0d 70,000 miles, since last year, having disappeared throughout winter but has come back in the last month.

When I start the car in the morning and engage reverse, they work fine, I get to work which is 21 miles away, they don't work and get a constant tone from the start. Same happens on the way home.
This doesn't happen every time and I really can't seem to figure out a pattern except for the above mentioned.

I've had my car serviced at a Volvo dealership and no codes or error messages have ever appeared during service time or on the dash.

Any ideas guys?

Philatron · Jun 14th, 2012, 11:28

I've got the same problem in my 04 plate, same spec, S40... amongst other problems... I've also noticed that, when it IS working, it's not as responsive as it used to be... I have to be closer to objects for it to work, have you noticed that?

Elfed · Jun 14th, 2012, 12:07

I've not noticed that, doesn't mean it's not happened though. I gave mine a good clean last night, but if they work sometimes I doubt it would be that.

The rear bumper is supposedly very easy to remove, so the next job I guess is to remove that and clean all the connections.

The manual states that if there's a problem, the orange 'i' light will come on, no light?

The bloody thing worked fine this morning!!!! Lol.

Philatron · Jun 14th, 2012, 12:14

No "I" light on mine, either. And I gave them a good clean at one point, too... They then worked fine on the first drive and I thought I'd cracked it... then the constant tone came back!!

I've not looked but if you find any instructions for removing the rear bumper online then please let me know!

ETA: apparently this has instructions for bumper removal, from page 5 on: http://www.westfalia-automotive.de/f...%2013.8018.pdf

Elfed · Jun 14th, 2012, 12:17

If you go on the Volvo website and go to S40 accessories, there's an excellent pdf about fitting both front and rear parking sensors. I've no link sorry.

Elfed · Jun 14th, 2012, 12:18

Does yours work fine when you've just started the car and not when driven for a bit?

Philatron · Jun 14th, 2012, 12:27

Quote:

Originally Posted by Elfed

Does yours work fine when you've just started the car and not when driven for a bit?

Sometimes it's fine when just started, sometimes not. It is completely random which is annoying as heck!

Elfed · Jun 14th, 2012, 12:36

Mine always works when started? Weird problem, these cars are prone to these strange intermittent electrical problems aren't they!!

Philatron · Jun 14th, 2012, 13:04

Just about to check if mine will start and then I'm off for a new battery.
I've still got the original battery in mine (now 8 yrs old) and I read somewhere (think on Swedespeed) that the electrics can get "confused" when the battery is on it's way out... Think they should only last about 5 years, too!

Elfed · Jun 14th, 2012, 13:07

Really, I'll look into that.

Jun 12th, 2012, 17:58	#1
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	Reversing sensors, intermittent fault? S40 SE Sport 2.0d I've had an intermittent fault with the reversing sensors on my MY05 S40 SE Sport 2.0d 70,000 miles, since last year, having disappeared throughout winter but has come back in the last month. When I start the car in the morning and engage reverse, they work fine, I get to work which is 21 miles away, they don't work and get a constant tone from the start. Same happens on the way home. This doesn't happen every time and I really can't seem to figure out a pattern except for the above mentioned. I've had my car serviced at a Volvo dealership and no codes or error messages have ever appeared during service time or on the dash. Any ideas guys? Last edited by Elfed; Jun 12th, 2012 at 18:02.

Jun 14th, 2012, 12:14	#4
Philatron New Member Last Online: Sep 19th, 2012 16:15 Join Date: Jun 2012 Location: NW	No "I" light on mine, either. And I gave them a good clean at one point, too... They then worked fine on the first drive and I thought I'd cracked it... then the constant tone came back!! I've not looked but if you find any instructions for removing the rear bumper online then please let me know! ETA: apparently this has instructions for bumper removal, from page 5 on: http://www.westfalia-automotive.de/f...%2013.8018.pdf Last edited by Philatron; Jun 14th, 2012 at 12:17.

Jun 14th, 2012, 11:28	#2
Philatron New Member Last Online: Sep 19th, 2012 16:15 Join Date: Jun 2012 Location: NW	I've got the same problem in my 04 plate, same spec, S40... amongst other problems... I've also noticed that, when it IS working, it's not as responsive as it used to be... I have to be closer to objects for it to work, have you noticed that?

Jun 14th, 2012, 12:07	#3
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	I've not noticed that, doesn't mean it's not happened though. I gave mine a good clean last night, but if they work sometimes I doubt it would be that. The rear bumper is supposedly very easy to remove, so the next job I guess is to remove that and clean all the connections. The manual states that if there's a problem, the orange 'i' light will come on, no light? The bloody thing worked fine this morning!!!! Lol.

Jun 14th, 2012, 12:17	#5
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	If you go on the Volvo website and go to S40 accessories, there's an excellent pdf about fitting both front and rear parking sensors. I've no link sorry.

Jun 14th, 2012, 12:18	#6
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	Does yours work fine when you've just started the car and not when driven for a bit?

Jun 14th, 2012, 12:36	#8
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	Mine always works when started? Weird problem, these cars are prone to these strange intermittent electrical problems aren't they!!

Jun 14th, 2012, 13:04	#9
Philatron New Member Last Online: Sep 19th, 2012 16:15 Join Date: Jun 2012 Location: NW	Just about to check if mine will start and then I'm off for a new battery. I've still got the original battery in mine (now 8 yrs old) and I read somewhere (think on Swedespeed) that the electrics can get "confused" when the battery is on it's way out... Think they should only last about 5 years, too!

Jun 14th, 2012, 13:07	#10
Elfed Member Last Online: Jan 23rd, 2013 18:29 Join Date: Feb 2011 Location: Bangor	Really, I'll look into that.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)