abs light

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Help... abs light stays on, MOT overdue..... 1998 325i
will a reset tool help? light only came on after having new disc's and pads all round. ecu changed, no fix, put original back on. 

Hope someone can help, mrs is about blow a gasket......

This post would perhaps have attracted more replies if it had been posted in the 3 Series Forum - I'll move it tomorrow.  Mike F

Edited by Mike Fishwick - 08 Apr 2013 at 4:11pm

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studio1251 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 20 Feb 2013 Location: dover kent Status: Offline Points: 6	Post Options Post Reply Quote studio1251 Report Post Thanks(0) Quote Reply Topic: abs light Posted: 07 Apr 2013 at 6:59pm
	Help... abs light stays on, MOT overdue..... 1998 325i will a reset tool help? light only came on after having new disc's and pads all round. ecu changed, no fix, put original back on. Hope someone can help, mrs is about blow a gasket...... This post would perhaps have attracted more replies if it had been posted in the 3 Series Forum - I'll move it tomorrow. Mike F Edited by Mike Fishwick - 08 Apr 2013 at 4:11pm

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StourbridgeLad Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 22 Mar 2013 Location: Stourbridge Status: Offline Points: 17	Post Options Post Reply Quote StourbridgeLad Report Post Thanks(0) Quote Reply Posted: 07 Apr 2013 at 10:22pm
	Have you called up the ABS fault memory with a code reader? ABS speed sensors are prone to becoming unserviceable and on older cars wiring damage due to water corrosion in this area is also a possible factor. (Personally though I think the light coming on after the pad/disc change is just coincidence) Hope this info helps and good luck...

Mike Fishwick Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 04 Aug 2006 Location: France Status: Offline Points: 2753	Post Options Post Reply Quote Mike Fishwick Report Post Thanks(0) Quote Reply Posted: 08 Apr 2013 at 4:07pm
	Perhaps the sensors became coated with debris during the brake work - take them all out and clean they - and also inspect their wiring and plug/sockets connectors for any dirt etc. It only takes one sensor to bring up the warning lamp. Also - is your battery in good condiiton? Give it an overnight charge, and then go for a drive to see if the system resets, as they often do. Don't buy new bits unless you are sure you need them - people spend a fortune and then find the cause was a bit of dirt on a sensor.

studio1251 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 20 Feb 2013 Location: dover kent Status: Offline Points: 6	Post Options Post Reply Quote studio1251 Report Post Thanks(0) Quote Reply Posted: 08 Apr 2013 at 9:16pm
	thanks for info, will be able to check the sensors and clean them not sure this is the prob, have a bad feeling it may be the pump ! As soon as my back gets better will try again. Will let you know. have a gunson reset meter but seems to only reset the service bars
	stephen.c.tibbles

studio1251 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 20 Feb 2013 Location: dover kent Status: Offline Points: 6	Post Options Post Reply Quote studio1251 Report Post Thanks(0) Quote Reply Posted: 22 Apr 2013 at 9:11pm
	Still unable to clear the ABS light, and the MOT is long overdue. The many code readers (6) we have tried do not recognise the car. Is their any way I can test the sensors before getting new ones, running out of money. Spent more than I paid for it already, and getting grief from her indoors............... Thank you.
	stephen.c.tibbles

AShah Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 27 Jul 2011 Location: Bridgend, Wales Status: Offline Points: 423	Post Options Post Reply Quote AShah Report Post Thanks(0) Quote Reply Posted: 24 Apr 2013 at 12:08pm
	Have you done a viual of the sensors and the connectors? I know this sound stupid, but i once came accross a Ford that had the light on, and it took me 2 days to eventually find that the person that had worked on the car last had smached the bit of the sensor that sticks out. Changed the sensor and all was well. Does the light come on straight away when the engine is turned on? If so its an electrical connection. If it goes out when turned on and then comes on when over 5mph, then its a sensor that has degraded. If you use a multimetre on the ohm setting, connect the probes to the pins in each connector and spin the wheel, you should get a variable reading. On the rears, use the same pins you did on the front as there are 3 pins on the rears and 2 on the fronts. The one with little variation or no reading is the one that has failed. My bet is its the right rear.
	E36 home of South Wales! '96 Alpina B3 3.2 Touring '91 325iSEA 4 Door Old: '93 325 Coupe '96 318is Coupe '92 320 Coupe '96 318is Coupe '97 328 Cabriolet '95 M3 4 Door '99 323 Sport Tourer

studio1251 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 20 Feb 2013 Location: dover kent Status: Offline Points: 6	Post Options Post Reply Quote studio1251 Report Post Thanks(0) Quote Reply Posted: 12 May 2013 at 7:39pm
	have tried many fault code readers but they do not recognise my car, anybody had the same problem, and how did you resolve it.........
	stephen.c.tibbles

AShah Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 27 Jul 2011 Location: Bridgend, Wales Status: Offline Points: 423	Post Options Post Reply Quote AShah Report Post Thanks(0) Quote Reply Posted: 13 May 2013 at 9:13am
	As per my post above: If you use a multimetre on the ohm setting, connect the probes to the pins in each connector and spin the wheel, you should get a variable reading. On the rears, use the same pins you did on the front as there are 3 pins on the rears and 2 on the fronts. The one with little variation or no reading is the one that has failed. My bet is its the right rear.
	E36 home of South Wales! '96 Alpina B3 3.2 Touring '91 325iSEA 4 Door Old: '93 325 Coupe '96 318is Coupe '92 320 Coupe '96 318is Coupe '97 328 Cabriolet '95 M3 4 Door '99 323 Sport Tourer

studio1251 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 20 Feb 2013 Location: dover kent Status: Offline Points: 6	Post Options Post Reply Quote studio1251 Report Post Thanks(0) Quote Reply Posted: 16 May 2013 at 8:55pm
	thanks for info. Car now at the garage and hope to get a result one way or another. will let you know the outcome tomorrow. The fact that no diagnostic machine will read the car concerns me.[EMAIL= ][/EMAIL]
	stephen.c.tibbles