K9d 108 Report post Posted August 21, 2011 My neighbours 156 has a problem whereby the lights stay on all the time. From what I can see the rear light on the drivers side is lit. Any ideas as to cause and cure ? Quote Share this post Link to post Share on other sites
moon_blue 92 Report post Posted August 21, 2011 I read somewhere (AO I think) that its a fault with the rev counter Quote Share this post Link to post Share on other sites
ChrisO 2 Report post Posted August 22, 2011 Yes this is the well documented rev counter issue. The cause is the "bulb out" warning circuit which is controlled by a bunch of chips on the rev counter - when one or more of these burn out it leaves an open circuit to one of the bulds that the system monitors (usually the offside rear lamp) - this will cause a perminent battery drain and the "bulb out" warning light will be on even though all the bulbs are working correctly. There are two fixes for this. 1) Easy - replace the rev counter - one screw for the trim and two for the rev counter it's self, it should be a 5 minute job to change (assuming you can find a matching rev counter for the car, but Smaky can advise if any are interchangable) 2) Hard - remove the rev counter (as above) take it apart and replace the blown IC chips - there are serveral write ups regarding how to do this on the AO website along with details of the chips required - search the 156 forum area for Rev Counter issues. Chris Quote Share this post Link to post Share on other sites
K9d 108 Report post Posted August 22, 2011 Cheers I will pass this information on, I know where there is a dead 156 that may have a spare rev counter. Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted August 22, 2011 Cheers I will pass this information on, I know where there is a dead 156 that may have a spare rev counter. If that is the devizes scrappy it's a JTD Quote Share this post Link to post Share on other sites
K9d 108 Report post Posted August 22, 2011 If that is the devizes scrappy it's a JTD No I meant the dead one with the hideous lights in Lyneham Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted August 29, 2011 If that is the devizes scrappy it's a JTD No I meant the dead one with the hideous lights in Lyneham Nope that's gone. Quote Share this post Link to post Share on other sites
K9d 108 Report post Posted August 29, 2011 That options out the window then. If it was me I would just take the bulb out. Quote Share this post Link to post Share on other sites
ChrisO 2 Report post Posted August 29, 2011 that is a temporary fix, but not a long term one. Just seen a couple of Rev counters on ebay plus there must be 5/6 cars being broken. Quote Share this post Link to post Share on other sites
jhc 28 Report post Posted August 30, 2011 I replaced a LOT of bulbs (including the sidelights) on my 156 because the bulb out light was always on... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted September 5, 2011 Number plate lights are always overlooked. Quote Share this post Link to post Share on other sites
Guest Report post Posted September 6, 2011 Just had the same thing on my 156 .... Took 3 hours and £42 to sort, but all is well. Managed to get one local, but a bit steep, I thought. Really is easy to do, 3 screws and 2 "idiot proof" connectors (only go in 1 way!) If you can't get one local, try the parts websites, they usually deliver next day and are mostly good to match parts correctly. Good luck! Quote Share this post Link to post Share on other sites
K9d 108 Report post Posted September 8, 2011 It's not my car that has the problem, have passed the info on to my neighbour. Quote Share this post Link to post Share on other sites