2015 Volkswagen Golf — dEF warning came back soon after refill — Bay Area owner question

If it were mine, I would want a real battery/charging test, not just resting voltage, before blaming a module.

One thing that mattered for me: a loaded-suspension check shows play that a wheels-hanging inspection misses.

One thing that mattered for me: if it is cylinder-specific on the 2015 Volkswagen Golf, move a coil or plug and see whether the code follows.

I would start here: measure it if you can. Two cars can feel identical and have different causes.

I would start here: measure it if you can. Two cars can feel identical and have different causes. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt.

Before you spend money, a loaded-suspension check shows play that a wheels-hanging inspection misses.

If it were mine, measure it if you can. Two cars can feel identical and have different causes.

I went back under the 2015 Volkswagen Golf tonight and wrote down when it happens: only after a heat soak, not on a cold start.

One thing that mattered for me: if it is cylinder-specific on the 2015 Volkswagen Golf, move a coil or plug and see whether the code follows. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt.

I would start here: I would want a real battery/charging test, not just resting voltage, before blaming a module.

I would start here: measure it if you can. Two cars can feel identical and have different causes. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt. Happy to compare notes if your setup differs.

Before you spend money, capture when the 2015 Volkswagen Golf does it — temp, speed, and whether it is in gear — before replacing parts.

I would start here: I would want a real battery/charging test, not just resting voltage, before blaming a module. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt.

Before you spend money, a loaded-suspension check shows play that a wheels-hanging inspection misses. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt.

Before you spend money, if it is cylinder-specific on the 2015 Volkswagen Golf, move a coil or plug and see whether the code follows.

If it were mine, swap the cheap/easy piece first on the 2015 Volkswagen Golf and see if the fault follows.

One thing that mattered for me: a loaded-suspension check shows play that a wheels-hanging inspection misses. That is from a 2015 Volkswagen Golf in Bay Area, so take the climate with a grain of salt.