diff --git a/vehicle/mercedes/helper.go b/vehicle/mercedes/helper.go
index cfdc231a2..9d6ab2932 100644
--- a/vehicle/mercedes/helper.go
+++ b/vehicle/mercedes/helper.go
@@ -35,11 +35,11 @@ const (
 	BffUriNORAM                = "https://bff.amap-prod.mobilesdk.mercedes-benz.com"
 	WidgetUriNORAM             = "https://widget.amap-prod.mobilesdk.mercedes-benz.com"
 	IdUri                      = "https://id.mercedes-benz.com"
-	RisApplicationVersionEMEA  = "1.52.0"
+	RisApplicationVersionEMEA  = "1.55.0"
 	RisSdkVersionEMEA          = "2.160.1"
-	RisApplicationVersionAPAC  = "1.52.0"
+	RisApplicationVersionAPAC  = "1.55.0"
 	RisSdkVersionAPAC          = "2.160.1"
-	RisApplicationVersionNORAM = "3.52.0"
+	RisApplicationVersionNORAM = "3.55.0"
 	RisSdkVersionNORAM         = "2.160.1"
 	RisOsVersion               = "17.3"
 	RisOsName                  = "ios"
@@ -86,7 +86,6 @@ func mbheaders(includeAuthServerHeader bool, region string) map[string]string {
 		"Content-Type":    "application/json",
 		"Accept-Language": "en-GB",
 		"Accept":          "*/*",
-		"x-dev":           "1",
 	}
 
 	switch region {
diff --git a/vehicle/mercedes/identity.go b/vehicle/mercedes/identity.go
index ac0d744ab..f6c782c48 100644
--- a/vehicle/mercedes/identity.go
+++ b/vehicle/mercedes/identity.go
@@ -7,7 +7,6 @@ import (
 	"net/url"
 	"strings"
 	"sync"
-	"time"
 
 	"github.com/evcc-io/evcc/server/db/settings"
 	"github.com/evcc-io/evcc/util"
@@ -64,17 +63,14 @@ func NewIdentity(log *util.Logger, token *oauth2.Token, account string, region s
 		return instance, nil
 	}
 
-	if !token.Valid() {
-		token.Expiry = time.Now().Add(time.Duration(10) * time.Second)
-	}
+	// store config token for potential re-use
+	var configToken = token
 
 	// database token
-	if !token.Valid() {
-		var tok oauth2.Token
-		if err := settings.Json(v.settingsKey(), &tok); err == nil {
-			v.log.DEBUG.Println("identity.NewIdentity - database token found")
-			token = &tok
-		}
+	var tok oauth2.Token
+	if err := settings.Json(v.settingsKey(), &tok); err == nil {
+		v.log.DEBUG.Println("identity.NewIdentity - database token found")
+		token = &tok
 	}
 
 	if !token.Valid() && token.RefreshToken != "" {
@@ -84,6 +80,13 @@ func NewIdentity(log *util.Logger, token *oauth2.Token, account string, region s
 		}
 	}
 
+	if !token.Valid() {
+		v.log.DEBUG.Println("identity.NewIdentity - config refreshToken started")
+		if tok, err := v.RefreshToken(configToken); err == nil {
+			token = tok
+		}
+	}
+
 	if !token.Valid() {
 		return nil, errors.New("token expired")
 	}