Hi, New to the forum and in desperate need of help.
This is an issue I have been trying to resolve for 3 months.
It started 12 months ago whe driving the car it would cut out with loss of indicators for no apparent reson. When attempting to start...no crank or indicators.
Central locking and alarm worked fine, left for 5min's the car would start...all well. This would happen every couple of month.
This fault progressed and the alarm would sound in the middle of the night for no reason. Could not be turned off with remote, allthough central locking worked fine. Only solution to stop was to disconnect the battery. Back-up battery for alarm would not sound.
Next stage, the car occasionaly would not start, sounded six pings and an odd (/8) symbol on dash...key fob would activate central locking OK, as would the internal switch. However no indicators, hazards, fuel release etc.
Fitted a known good passanger fuse-box, no change.
Took the car to local indi with spare BCU in hand.
Testbook confirmed existing BCU fine and it was re-programmed to confirm, however they were unable to resolve the issues, other than say that if they yanked the wiring harness, they could get the indicators to work.
Towed the car home and removed the harnesses running thru the bulkhead, completley removed the engine bay fuse box, BCU, pasanger fusebox. Stipped the brading from the harness in the area of the bulkhead grommet, but found no problems.
Re-assembled all of the units and wiring...hey presto! eveyting worked 100%.
2 days later, alarm goes off 3:00 AM, (no wind or rain), can't stop the alarm, cantral locking not working on the key fob, no flasing alarm light on dash, no electrics working, no crank, odd symbol back on dash, 6 pings on position3 ignition.
Removed all components, re-inserted all connectors, re-checked all earths, problem still remains. Checked for corrosion in all footwell connectors abd BCU, all good.
This time, the key fob does nothing and there is no alarm light. Also noticed the ignition key does not illuminate on entry.
After spending hour tracing wires and reading up on forums no further forward.
Anyone...any advice ...please.
I have read that there are data busses that communicate between BCU PCFB etc...are there any connectors within the main hasness running behind the dash?
PS...its a 98 V8 Manual and I live Northumberland UK.
This is an issue I have been trying to resolve for 3 months.
It started 12 months ago whe driving the car it would cut out with loss of indicators for no apparent reson. When attempting to start...no crank or indicators.
Central locking and alarm worked fine, left for 5min's the car would start...all well. This would happen every couple of month.
This fault progressed and the alarm would sound in the middle of the night for no reason. Could not be turned off with remote, allthough central locking worked fine. Only solution to stop was to disconnect the battery. Back-up battery for alarm would not sound.
Next stage, the car occasionaly would not start, sounded six pings and an odd (/8) symbol on dash...key fob would activate central locking OK, as would the internal switch. However no indicators, hazards, fuel release etc.
Fitted a known good passanger fuse-box, no change.
Took the car to local indi with spare BCU in hand.
Testbook confirmed existing BCU fine and it was re-programmed to confirm, however they were unable to resolve the issues, other than say that if they yanked the wiring harness, they could get the indicators to work.
Towed the car home and removed the harnesses running thru the bulkhead, completley removed the engine bay fuse box, BCU, pasanger fusebox. Stipped the brading from the harness in the area of the bulkhead grommet, but found no problems.
Re-assembled all of the units and wiring...hey presto! eveyting worked 100%.
2 days later, alarm goes off 3:00 AM, (no wind or rain), can't stop the alarm, cantral locking not working on the key fob, no flasing alarm light on dash, no electrics working, no crank, odd symbol back on dash, 6 pings on position3 ignition.
Removed all components, re-inserted all connectors, re-checked all earths, problem still remains. Checked for corrosion in all footwell connectors abd BCU, all good.
This time, the key fob does nothing and there is no alarm light. Also noticed the ignition key does not illuminate on entry.
After spending hour tracing wires and reading up on forums no further forward.
Anyone...any advice ...please.
I have read that there are data busses that communicate between BCU PCFB etc...are there any connectors within the main hasness running behind the dash?
PS...its a 98 V8 Manual and I live Northumberland UK.