Starting Issues (Intermittent)

[lotecredneck]

I am having starting issues with my '02 Cab with tiptronic. I have searched the forum and have no real clear answer.

Occasionally, when you turn the key to the start position nothing happens other than all of the dash lights illuminating like normal. You can cycle the key a time or two and it will then fire up.

I replaced the battery a few weeks ago, so I know it's not the battery. Also after reading about the ignition switch issues that lead me to believe I had one failing as well. I replaced the switch and all was fine for a couple of days, then it did it again! I have checked battery connections and they look good. Like I said, it is an intermittent problem and may not happen again for several days, but it sure make you nervous to leave town without knowing what the cause of the problem is.

Has anyone had this problem and actually found the problem? The only other thing I haven't tried is switching keys to see if the transponder is giving problems.

Thanks,

Tony

[RFM]

There are several possibilities, first of all, an electrical diagram is highly recommended: read possible fault codes - check brake pedal switch, connector and wiring - check Tiptronic switch, connector, wiring and cable adjustment, the positions with start release are: Park and Neutral - relay + holder and wiring under the carpet rear of the car, clam shell area (cabrio) - alarm control box (start release) connectors and wiring - start motor itself, connectors and wiring - check the ground cables for poor contact and/or resistance, engine to chassis, chassis to battery - check power cable battery to start motor/alternator for poor contact and/or resistance - are the ignition switch, connector and wiring well placed and not damaged ? There will be still some points to check out but you can start with these. Success in further research work.