diff --git a/vehicle/vw/eudataact/store.go b/vehicle/vw/eudataact/store.go
index 2d3bf6a11..784c21f32 100644
--- a/vehicle/vw/eudataact/store.go
+++ b/vehicle/vw/eudataact/store.go
@@ -1,6 +1,7 @@
 package eudataact
 
 import (
+	"log"
 	"maps"
 	"slices"
 	"sync"
@@ -73,7 +74,7 @@ func (s *store) state(vin string) *vehicleState {
 // merged and merges them into the vehicle's map oldest to newest. It returns the
 // newest dataset's delivery time (used to schedule the next poll).
 // On first poll latest maxBackfill content datasets are downloaded.
-func (s *store) update(vin string) (time.Time, error) {
+func (s *store) update(log *log.Logger, vin string) (time.Time, error) {
 	v := s.state(vin)
 
 	v.mu.Lock()
diff --git a/vehicle/vw/eudataact/types.go b/vehicle/vw/eudataact/types.go
index f8d763d31..465c8fb36 100644
--- a/vehicle/vw/eudataact/types.go
+++ b/vehicle/vw/eudataact/types.go
@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"io"
+	"log"
 	"slices"
 	"strings"
 	"time"
@@ -144,7 +145,7 @@ func contentDatasets(list []dataset) ([]dataset, error) {
 // data field name. On duplicate field names the entry with the newest timestamp
 // wins. The VIN is returned so the caller can drop datasets that do not belong
 // to the requested vehicle.
-func parseDataset(b []byte) (map[string]point, error) {
+func parseDataset(log *log.Logger, b []byte) (map[string]point, error) {
 	zr, err := zip.NewReader(bytes.NewReader(b), int64(len(b)))
 	if err != nil {
 		return nil, err
@@ -172,6 +173,8 @@ func parseDataset(b []byte) (map[string]point, error) {
 		return nil, err
 	}
 
+	log.Println(raw)
+
 	var ds datasetFile
 	if err := json.Unmarshal(raw, &ds); err != nil {
 		return nil, err