o/s/r outer sensor makes continuos beep and shows red line every time reverse is selected, just asked local dealer for price of sensor and been quoted over £100,and thats not fitted.

Anybody recommend best place to buy would prefer O E if poss.

TIA mick.

Couple of things to check:

 

1) Sensors aren't too dirty.  If they are, they will give false readings.

2) If the battery voltage is flucuating, it will cause the reversing sensors to fail.  I've had this issue on three Octavia's.  Get your battery CCA tested; if its below 20% of the total capacity, you should consider replacing the battery.

36 minutes ago, varaderoguy said:

Couple of things to check:

 

1) Sensors aren't too dirty.  If they are, they will give false readings.

2) If the battery voltage is flucuating, it will cause the reversing sensors to fail.  I've had this issue on three Octavia's.  Get your battery CCA tested; if its below 20% of the total capacity, you should consider replacing the battery.

for some reason they are all working fine now.

If they play up again will get battery checked.

I do keep them clean.

Thanks Mick.