A little help please

peter11111 · 23rd November 2016, 16:30

I have a "Y" reg Rover 75 V6. Every two to three weeks the battery discharges completely overnight. No signs of any problems in between. Any guidance would be much appreciated.

suzublu · 23rd November 2016, 16:34

Quote:

Originally Posted by peter11111

I have a "Y" reg Rover 75 V6. Every two to three weeks the battery discharges completely overnight. No signs of any problems in between. Any guidance would be much appreciated.

Do you have a satnav in the boot?

Peter16 · 23rd November 2016, 17:00

Basically, i'd say it's likely to be one of three things.

1) The battery isin't being charged properly.
2) The battery isin't holding a charge properly.
3) Something on the car is draining it rapidly.

So, process of elimination.

How old is the battery? Do you have a multimeter (or ODBII reader, etc) that can show you the voltage that the battery puts out when it's charged? This can indicate if a cell on the battery is dead.

Animesis · 23rd November 2016, 17:35

We had the same issue, at first the satnav in the back was running and didnt seem to turn off after locking the car, you could hear the fan running, -dried it out on the gas boiler over night and that fixed that problem- but the battery would still occasionally die overnight every couple of weeks or so. Also if leaving the inside lights on for maybe 10/15 minutes the battery wouldnt have the strength to start the car.
KwikFit tested it and said the battery was fine, but I didnt trust them and after another two months of that I got a new battery and now its completely fine...

T-Cut · 23rd November 2016, 17:42

Technical Tip TT0036 states:
Maximum expected current drain
Ignition off, up to 18 minutes: 1 to 2 amps
Ignition off, after 18 minutes (sleep mode): 30 to 45 mA

How To Check Drain: http://www.the75andztclub.co.uk/foru...d.php?t=167111

TC

peter11111 · 23rd November 2016, 21:23

Thank you all for your help. No sat nav in the boot, battery unknown age, have been very careful checking everything is off when parking up for the night. The technical checks are beyond me I'm afraid. New battery time?

Peter16 · 23rd November 2016, 23:18

Even if it's definately not a problem with the onboard equipment draining the battery, it could still be either the battery or the alternator. Alternators rarely "die" as such, but the voltage regulators do and then the output wanders to the point it's not charging the battery properly.

Reading the voltage of the battery and alternator can tell you if either is a problem. Given garage prices it's well worth checking first since simply changing the battery will work, up until your new battery goes flat because i'ts not being charged by the car. (at which point you end up paying the garage twice)

If you haven't got a multimeter, do you know anybody who might have? It's quite a basic bit of electronic equipment and they are reasonably commonplace. (mostly because they cost all of a tenner)

SD1too · 24th November 2016, 06:59

Quote:

Originally Posted by peter11111

New battery time?

I'd say 'buy battery charger' time!

How do you use the car Peter? Long motorway cruises or short journeys? How many times per week? Are you switching off the HRW if it's not needed after starting the engine? Have you just bought the car?

Let's try to find out what's happening before you reach into your wallet.

Simon

peter11111 · 24th November 2016, 09:12

Had the car about six months. Always turn HRW off. Do about 15 miles every day, no stop start, in daylight.

On previous occasions I've trickle charged the battery, yesterday I tried jump starting and got a clicking noise and a nearside headlight flashing.
On reflection perhaps I should have left the donor car running for longer before trying to start the Rover.

suzublu · 24th November 2016, 09:18

Clicking & headlight flashing is an indicator of a dead battery, time for a new one I'm afraid.

23rd November 2016, 16:30	#1
peter11111 Newbie rover 75 Join Date: Apr 2016 Location: launceston Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	A little help please I have a "Y" reg Rover 75 V6. Every two to three weeks the battery discharges completely overnight. No signs of any problems in between. Any guidance would be much appreciated.

23rd November 2016, 17:35	#4
Animesis Loves to post Rover 75 saloon 2.0l Diesel Connoisseur Join Date: Apr 2016 Location: Wokingham Posts: 259 Thanks: 136 Thanked 21 Times in 15 Posts	We had the same issue, at first the satnav in the back was running and didnt seem to turn off after locking the car, you could hear the fan running, -dried it out on the gas boiler over night and that fixed that problem- but the battery would still occasionally die overnight every couple of weeks or so. Also if leaving the inside lights on for maybe 10/15 minutes the battery wouldnt have the strength to start the car. KwikFit tested it and said the battery was fine, but I didnt trust them and after another two months of that I got a new battery and now its completely fine... __________________ Gearbox change, clutch, subframe refurbish, handbrake mod, drumbrake repair, rear coils, plate PCB repair, sunroof drains refitted, trim leak fix, cruise control fix, cleared EGR/inlet, new strut bearings, USB sockets in rear ashtray, new front brake pipes/hoses, repaired undertray, new o/s rear upper arm, refurbished rear suspension&subframe, fixed back light leak, new exhaust, fitted HID xenons, FBH fix, new thermostat, armrest LEDs, wood dash, new hydromount, natnav, tyres, numberplates

23rd November 2016, 17:00	#3
Peter16 Newbie Rover 75 Saloon (CDT) Join Date: Nov 2016 Location: Stowmarket Posts: 17 Thanks: 0 Thanked 2 Times in 2 Posts	Basically, i'd say it's likely to be one of three things. 1) The battery isin't being charged properly. 2) The battery isin't holding a charge properly. 3) Something on the car is draining it rapidly. So, process of elimination. How old is the battery? Do you have a multimeter (or ODBII reader, etc) that can show you the voltage that the battery puts out when it's charged? This can indicate if a cell on the battery is dead.

23rd November 2016, 17:42	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Technical Tip TT0036 states: Maximum expected current drain Ignition off, up to 18 minutes: 1 to 2 amps Ignition off, after 18 minutes (sleep mode): 30 to 45 mA How To Check Drain: http://www.the75andztclub.co.uk/foru...d.php?t=167111 TC

23rd November 2016, 21:23	#6
peter11111 Newbie rover 75 Join Date: Apr 2016 Location: launceston Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you all for your help. No sat nav in the boot, battery unknown age, have been very careful checking everything is off when parking up for the night. The technical checks are beyond me I'm afraid. New battery time?

23rd November 2016, 23:18	#7
Peter16 Newbie Rover 75 Saloon (CDT) Join Date: Nov 2016 Location: Stowmarket Posts: 17 Thanks: 0 Thanked 2 Times in 2 Posts	Even if it's definately not a problem with the onboard equipment draining the battery, it could still be either the battery or the alternator. Alternators rarely "die" as such, but the voltage regulators do and then the output wanders to the point it's not charging the battery properly. Reading the voltage of the battery and alternator can tell you if either is a problem. Given garage prices it's well worth checking first since simply changing the battery will work, up until your new battery goes flat because i'ts not being charged by the car. (at which point you end up paying the garage twice) If you haven't got a multimeter, do you know anybody who might have? It's quite a basic bit of electronic equipment and they are reasonably commonplace. (mostly because they cost all of a tenner)

24th November 2016, 09:12	#9
peter11111 Newbie rover 75 Join Date: Apr 2016 Location: launceston Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Had the car about six months. Always turn HRW off. Do about 15 miles every day, no stop start, in daylight. On previous occasions I've trickle charged the battery, yesterday I tried jump starting and got a clicking noise and a nearside headlight flashing. On reflection perhaps I should have left the donor car running for longer before trying to start the Rover.

24th November 2016, 09:18	#10
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,918 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	Clicking & headlight flashing is an indicator of a dead battery, time for a new one I'm afraid.