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Hi, I' m Chad. Welcome to JustAnswer. I' m reviewing your question now, and I will be post back with your reply ASAP
is there a red security light flashing on dash or steady on while you trying to start ?
do you have one or 2 keys for it ?
please let me know
Thank YouChad FarhatASE Certified Technician
ok good , i will look up the circuit and get back with you
have you checked the main fusible links on top of the battery ? i sent you a diagram
Can you check relay number # ***** and # *****
if that checks out there is a tsb on the ignition switch ?
do you have access to a vw scanner to see if we have any of the codes in the table i sent you to confirm the ignition switch ?
when you turn the switch from off to on did you see the check engine light comes on for few seconds and goes off ? it should can you check for me please ?
The check engine light comes on for few seconds as what they call ( Proofing that the ECM ( computer) is communicating with rest of the modules
if you dont see , 3 possible cause , the ecm , the ecm connector or another module interfering with ecm signal .
If you want me to tell you what is the most common solution for a no check engine light on switch on , is the ecm itself.
you can try unplugging it and clean the connector , if not it will replacement granted all the wiring and modules are okay .
You can try a used one , it will make it crank and start but shuts off because you will need the immobilizer programmed , but you will know if that fixed , if you dont want spend hours of going thru a pin out test on the ecm .
they have them used on ebay
definitely check that first
1 - Main Relay -J271- (100) ◊Component Location A1 1 - Power Supply Relay (terminal 30) -J317- (458) ◊Component Location A1 2 - Engine Component Power Supply Relay -J757- ◊Component Location A2 2 - Secondary Air Injection (AIR) Pump Relay -J299- (100) ◊Component Location A2 2 - Connection Bridge ◊Component Location A2 ◊Only with diesel engines Note:: ◊The number in brackets denotes the control number on relay
it will be labeled A1 on the diagram i sent you