thebiglad
Well-Known Member
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- 7,387
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When I bought Rudy (1998 3-door TDi 300) about 6 weeks ago, there were a number of electrical gremlins which I have been gradually working through.
The most important problem was that the horn wouldn't work. I eventually tracked it down to a faulty rotary coupler as per attached photos.
These things have various part numbers depending on age/type of vehicle, airbag or not, cruise or not and radio controls or not. My car is a '98 TDi 300 with airbag but no cruise or radio controls. Part number is YRC100350. This part also fits Disco 2's as well.
As hopefully can be seen from the pics the existing one is completely broken up and useless - the guy who tried to repair it glued it stuck fast which is why all the locating pins are broken.
So, having studied the Haynes manual for a while and having found the right component on Ebay for £15 instead of a new one via LR for £160 !!! I started work this morning.
It went remarkably easily !!!!!!!!!!!!!!! I followed the instructions to the letter and all went well - no exploding airbags or anything wrong. Still feeling a bit giddy at having gotten away with it, but just wanted to share with you.
For general info, the key elements seemed to be following the correct procedures re electrics, ie:
1. before disconnecting the battery, slacken BUT DO NOT REMOVE the battery terminal bolts, get an assistant to turn the ignition on then off and remove both terminals within 15 seconds;
2. Leave the car and go have a coffee for 30 mins to allow the airbag-system capacitor to discharge.
The rest is as per Haynes.
The most important problem was that the horn wouldn't work. I eventually tracked it down to a faulty rotary coupler as per attached photos.
These things have various part numbers depending on age/type of vehicle, airbag or not, cruise or not and radio controls or not. My car is a '98 TDi 300 with airbag but no cruise or radio controls. Part number is YRC100350. This part also fits Disco 2's as well.
As hopefully can be seen from the pics the existing one is completely broken up and useless - the guy who tried to repair it glued it stuck fast which is why all the locating pins are broken.
So, having studied the Haynes manual for a while and having found the right component on Ebay for £15 instead of a new one via LR for £160 !!! I started work this morning.
It went remarkably easily !!!!!!!!!!!!!!! I followed the instructions to the letter and all went well - no exploding airbags or anything wrong. Still feeling a bit giddy at having gotten away with it, but just wanted to share with you.
For general info, the key elements seemed to be following the correct procedures re electrics, ie:
1. before disconnecting the battery, slacken BUT DO NOT REMOVE the battery terminal bolts, get an assistant to turn the ignition on then off and remove both terminals within 15 seconds;
2. Leave the car and go have a coffee for 30 mins to allow the airbag-system capacitor to discharge.
The rest is as per Haynes.
